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Finding the Fourth Proportional to 508,315.88, 763,665.36 and 479,591.12

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Solution

The fourth proportional to 508,315.88, 763,665.36 and 479,591.12 is: 720,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,315.88 : 763,665.36 = 479,591.12 : x
  2. Step 2: Convert to fraction form
    508,315.88/763,665.36 = 479,591.12/x
  3. Step 3: Cross multiply
    508,315.88x = 763,665.36 × 479,591.12
  4. Step 4: Simplify right side
    508,315.88x = 366,247,125,307.60
  5. Step 5: Solve for x
    x = 366,247,125,307.60/508,315.88
  6. Step 6: Final answer
    x = 720,510.89

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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.