Home / 989,189.40-1,483,346.70-456,436.20

Finding the Fourth Proportional to 989,189.40, 1,483,346.70 and 456,436.20

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Solution

The fourth proportional to 989,189.40, 1,483,346.70 and 456,436.20 is: 684,452.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,189.40 : 1,483,346.70 = 456,436.20 : x
  2. Step 2: Convert to fraction form
    989,189.40/1,483,346.70 = 456,436.20/x
  3. Step 3: Cross multiply
    989,189.40x = 1,483,346.70 × 456,436.20
  4. Step 4: Simplify right side
    989,189.40x = 677,053,131,030.54
  5. Step 5: Solve for x
    x = 677,053,131,030.54/989,189.40
  6. Step 6: Final answer
    x = 684,452.47

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Double scale
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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.