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Finding the Fourth Proportional to 629,870.40, 944,805.60 and 472,406.40

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Solution

The fourth proportional to 629,870.40, 944,805.60 and 472,406.40 is: 708,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,870.40 : 944,805.60 = 472,406.40 : x
  2. Step 2: Convert to fraction form
    629,870.40/944,805.60 = 472,406.40/x
  3. Step 3: Cross multiply
    629,870.40x = 944,805.60 × 472,406.40
  4. Step 4: Simplify right side
    629,870.40x = 446,332,212,195.84
  5. Step 5: Solve for x
    x = 446,332,212,195.84/629,870.40
  6. Step 6: Final answer
    x = 708,609.60

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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.