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Finding the Fourth Proportional to 539,490.40, 809,235.60 and 371,528.80

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Solution

The fourth proportional to 539,490.40, 809,235.60 and 371,528.80 is: 557,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,490.40 : 809,235.60 = 371,528.80 : x
  2. Step 2: Convert to fraction form
    539,490.40/809,235.60 = 371,528.80/x
  3. Step 3: Cross multiply
    539,490.40x = 809,235.60 × 371,528.80
  4. Step 4: Simplify right side
    539,490.40x = 300,654,331,385.28
  5. Step 5: Solve for x
    x = 300,654,331,385.28/539,490.40
  6. Step 6: Final answer
    x = 557,293.20

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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.