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Finding the Fourth Proportional to 554,578.11, 765,318.30 and 299,929.30

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Solution

The fourth proportional to 554,578.11, 765,318.30 and 299,929.30 is: 413,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,578.11 : 765,318.30 = 299,929.30 : x
  2. Step 2: Convert to fraction form
    554,578.11/765,318.30 = 299,929.30/x
  3. Step 3: Cross multiply
    554,578.11x = 765,318.30 × 299,929.30
  4. Step 4: Simplify right side
    554,578.11x = 229,541,376,669.95
  5. Step 5: Solve for x
    x = 229,541,376,669.95/554,578.11
  6. Step 6: Final answer
    x = 413,902.70

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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.