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Finding the Fourth Proportional to 980,712.40, 1,471,068.60 and 349,646.80

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Solution

The fourth proportional to 980,712.40, 1,471,068.60 and 349,646.80 is: 524,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,712.40 : 1,471,068.60 = 349,646.80 : x
  2. Step 2: Convert to fraction form
    980,712.40/1,471,068.60 = 349,646.80/x
  3. Step 3: Cross multiply
    980,712.40x = 1,471,068.60 × 349,646.80
  4. Step 4: Simplify right side
    980,712.40x = 514,354,428,570.48
  5. Step 5: Solve for x
    x = 514,354,428,570.48/980,712.40
  6. Step 6: Final answer
    x = 524,470.20

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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.