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Finding the Fourth Proportional to 636,060.72, 877,398.30 and 397,182

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Solution

The fourth proportional to 636,060.72, 877,398.30 and 397,182 is: 547,882.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,060.72 : 877,398.30 = 397,182 : x
  2. Step 2: Convert to fraction form
    636,060.72/877,398.30 = 397,182/x
  3. Step 3: Cross multiply
    636,060.72x = 877,398.30 × 397,182
  4. Step 4: Simplify right side
    636,060.72x = 348,486,811,590.60
  5. Step 5: Solve for x
    x = 348,486,811,590.60/636,060.72
  6. Step 6: Final answer
    x = 547,882.93

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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.