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Finding the Fourth Proportional to 519,783.11, 717,306.68 and 304,926.83

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Solution

The fourth proportional to 519,783.11, 717,306.68 and 304,926.83 is: 420,802.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,783.11 : 717,306.68 = 304,926.83 : x
  2. Step 2: Convert to fraction form
    519,783.11/717,306.68 = 304,926.83/x
  3. Step 3: Cross multiply
    519,783.11x = 717,306.68 × 304,926.83
  4. Step 4: Simplify right side
    519,783.11x = 218,726,050,545.59
  5. Step 5: Solve for x
    x = 218,726,050,545.59/519,783.11
  6. Step 6: Final answer
    x = 420,802.54

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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.