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Finding the Fourth Proportional to 520,607.26, 718,491.02 and 316,672.24

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Solution

The fourth proportional to 520,607.26, 718,491.02 and 316,672.24 is: 437,039.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,607.26 : 718,491.02 = 316,672.24 : x
  2. Step 2: Convert to fraction form
    520,607.26/718,491.02 = 316,672.24/x
  3. Step 3: Cross multiply
    520,607.26x = 718,491.02 × 316,672.24
  4. Step 4: Simplify right side
    520,607.26x = 227,526,160,723.29
  5. Step 5: Solve for x
    x = 227,526,160,723.29/520,607.26
  6. Step 6: Final answer
    x = 437,039.93

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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.