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Finding the Fourth Proportional to 520,691.16, 718,706.57 and 302,951.06

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Solution

The fourth proportional to 520,691.16, 718,706.57 and 302,951.06 is: 418,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,691.16 : 718,706.57 = 302,951.06 : x
  2. Step 2: Convert to fraction form
    520,691.16/718,706.57 = 302,951.06/x
  3. Step 3: Cross multiply
    520,691.16x = 718,706.57 × 302,951.06
  4. Step 4: Simplify right side
    520,691.16x = 217,732,912,102.18
  5. Step 5: Solve for x
    x = 217,732,912,102.18/520,691.16
  6. Step 6: Final answer
    x = 418,161.34

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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.