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Finding the Fourth Proportional to 663,221.42, 914,318.79 and 560,836.10

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Solution

The fourth proportional to 663,221.42, 914,318.79 and 560,836.10 is: 773,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,221.42 : 914,318.79 = 560,836.10 : x
  2. Step 2: Convert to fraction form
    663,221.42/914,318.79 = 560,836.10/x
  3. Step 3: Cross multiply
    663,221.42x = 914,318.79 × 560,836.10
  4. Step 4: Simplify right side
    663,221.42x = 512,782,984,522.98
  5. Step 5: Solve for x
    x = 512,782,984,522.98/663,221.42
  6. Step 6: Final answer
    x = 773,170.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.