Home / 1,019,907,979.80-1,529,861,969.70-329,884,985.40

Finding the Fourth Proportional to 1,019,907,979.80, 1,529,861,969.70 and 329,884,985.40

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Solution

The fourth proportional to 1,019,907,979.80, 1,529,861,969.70 and 329,884,985.40 is: 494,827,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,907,979.80 : 1,529,861,969.70 = 329,884,985.40 : x
  2. Step 2: Convert to fraction form
    1,019,907,979.80/1,529,861,969.70 = 329,884,985.40/x
  3. Step 3: Cross multiply
    1,019,907,979.80x = 1,529,861,969.70 × 329,884,985.40
  4. Step 4: Simplify right side
    1,019,907,979.80x = 504,678,493,538,499,712
  5. Step 5: Solve for x
    x = 504,678,493,538,499,712/1,019,907,979.80
  6. Step 6: Final answer
    x = 494,827,478.10

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Half scale
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Double scale
Find fourth proportional to 1,019,907,980.80, 1,529,861,971.20 and 329,884,986.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.