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Finding the Fourth Proportional to 520,491.26, 781,153.64 and 503,884.10

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Solution

The fourth proportional to 520,491.26, 781,153.64 and 503,884.10 is: 756,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,491.26 : 781,153.64 = 503,884.10 : x
  2. Step 2: Convert to fraction form
    520,491.26/781,153.64 = 503,884.10/x
  3. Step 3: Cross multiply
    520,491.26x = 781,153.64 × 503,884.10
  4. Step 4: Simplify right side
    520,491.26x = 393,610,896,333.70
  5. Step 5: Solve for x
    x = 393,610,896,333.70/520,491.26
  6. Step 6: Final answer
    x = 756,229.60

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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.