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Finding the Fourth Proportional to 629,909.40, 944,864.10 and 472,445.40

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Solution

The fourth proportional to 629,909.40, 944,864.10 and 472,445.40 is: 708,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,909.40 : 944,864.10 = 472,445.40 : x
  2. Step 2: Convert to fraction form
    629,909.40/944,864.10 = 472,445.40/x
  3. Step 3: Cross multiply
    629,909.40x = 944,864.10 × 472,445.40
  4. Step 4: Simplify right side
    629,909.40x = 446,396,697,670.14
  5. Step 5: Solve for x
    x = 446,396,697,670.14/629,909.40
  6. Step 6: Final answer
    x = 708,668.10

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Half scale
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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.