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Finding the Fourth Proportional to 605,613.70, 907,399.95 and 478,767.70

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Solution

The fourth proportional to 605,613.70, 907,399.95 and 478,767.70 is: 717,344.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,613.70 : 907,399.95 = 478,767.70 : x
  2. Step 2: Convert to fraction form
    605,613.70/907,399.95 = 478,767.70/x
  3. Step 3: Cross multiply
    605,613.70x = 907,399.95 × 478,767.70
  4. Step 4: Simplify right side
    605,613.70x = 434,433,787,041.62
  5. Step 5: Solve for x
    x = 434,433,787,041.62/605,613.70
  6. Step 6: Final answer
    x = 717,344.72

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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.