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Finding the Fourth Proportional to 539,742.40, 809,613.60 and 434,766.40

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Solution

The fourth proportional to 539,742.40, 809,613.60 and 434,766.40 is: 652,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,742.40 : 809,613.60 = 434,766.40 : x
  2. Step 2: Convert to fraction form
    539,742.40/809,613.60 = 434,766.40/x
  3. Step 3: Cross multiply
    539,742.40x = 809,613.60 × 434,766.40
  4. Step 4: Simplify right side
    539,742.40x = 351,992,790,263.04
  5. Step 5: Solve for x
    x = 351,992,790,263.04/539,742.40
  6. Step 6: Final answer
    x = 652,149.60

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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.