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Finding the Fourth Proportional to 630,717.62, 870,377.98 and 344,239.76

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Solution

The fourth proportional to 630,717.62, 870,377.98 and 344,239.76 is: 475,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,717.62 : 870,377.98 = 344,239.76 : x
  2. Step 2: Convert to fraction form
    630,717.62/870,377.98 = 344,239.76/x
  3. Step 3: Cross multiply
    630,717.62x = 870,377.98 × 344,239.76
  4. Step 4: Simplify right side
    630,717.62x = 299,618,706,944.49
  5. Step 5: Solve for x
    x = 299,618,706,944.49/630,717.62
  6. Step 6: Final answer
    x = 475,044.14

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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.