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Finding the Fourth Proportional to 482,814.40, 723,760.80 and 376,139.20

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Solution

The fourth proportional to 482,814.40, 723,760.80 and 376,139.20 is: 563,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,814.40 : 723,760.80 = 376,139.20 : x
  2. Step 2: Convert to fraction form
    482,814.40/723,760.80 = 376,139.20/x
  3. Step 3: Cross multiply
    482,814.40x = 723,760.80 × 376,139.20
  4. Step 4: Simplify right side
    482,814.40x = 272,234,808,303.36
  5. Step 5: Solve for x
    x = 272,234,808,303.36/482,814.40
  6. Step 6: Final answer
    x = 563,849.81

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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.