Home / 687,424.59-1,031,251.10-288,095.40

Finding the Fourth Proportional to 687,424.59, 1,031,251.10 and 288,095.40

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Solution

The fourth proportional to 687,424.59, 1,031,251.10 and 288,095.40 is: 432,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,424.59 : 1,031,251.10 = 288,095.40 : x
  2. Step 2: Convert to fraction form
    687,424.59/1,031,251.10 = 288,095.40/x
  3. Step 3: Cross multiply
    687,424.59x = 1,031,251.10 × 288,095.40
  4. Step 4: Simplify right side
    687,424.59x = 297,098,696,714.46
  5. Step 5: Solve for x
    x = 297,098,696,714.46/687,424.59
  6. Step 6: Final answer
    x = 432,190.96

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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.