Home / 768,679,979.70-1,153,019,969.55-354,155,999.70

Finding the Fourth Proportional to 768,679,979.70, 1,153,019,969.55 and 354,155,999.70

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Solution

The fourth proportional to 768,679,979.70, 1,153,019,969.55 and 354,155,999.70 is: 531,233,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,679,979.70 : 1,153,019,969.55 = 354,155,999.70 : x
  2. Step 2: Convert to fraction form
    768,679,979.70/1,153,019,969.55 = 354,155,999.70/x
  3. Step 3: Cross multiply
    768,679,979.70x = 1,153,019,969.55 × 354,155,999.70
  4. Step 4: Simplify right side
    768,679,979.70x = 408,348,939,990,043,776
  5. Step 5: Solve for x
    x = 408,348,939,990,043,776/768,679,979.70
  6. Step 6: Final answer
    x = 531,233,999.55

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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.