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Finding the Fourth Proportional to 639,624, 882,758.88 and 371,352

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Solution

The fourth proportional to 639,624, 882,758.88 and 371,352 is: 512,510.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,624 : 882,758.88 = 371,352 : x
  2. Step 2: Convert to fraction form
    639,624/882,758.88 = 371,352/x
  3. Step 3: Cross multiply
    639,624x = 882,758.88 × 371,352
  4. Step 4: Simplify right side
    639,624x = 327,814,275,605.76
  5. Step 5: Solve for x
    x = 327,814,275,605.76/639,624
  6. Step 6: Final answer
    x = 512,510.91

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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.