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Finding the Fourth Proportional to 519,479.69, 717,001.31 and 304,688.95

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Solution

The fourth proportional to 519,479.69, 717,001.31 and 304,688.95 is: 420,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,479.69 : 717,001.31 = 304,688.95 : x
  2. Step 2: Convert to fraction form
    519,479.69/717,001.31 = 304,688.95/x
  3. Step 3: Cross multiply
    519,479.69x = 717,001.31 × 304,688.95
  4. Step 4: Simplify right side
    519,479.69x = 218,462,376,292.53
  5. Step 5: Solve for x
    x = 218,462,376,292.53/519,479.69
  6. Step 6: Final answer
    x = 420,540.75

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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.