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Finding the Fourth Proportional to 704,129.98, 971,699.59 and 381,839.98

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Solution

The fourth proportional to 704,129.98, 971,699.59 and 381,839.98 is: 526,939.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,129.98 : 971,699.59 = 381,839.98 : x
  2. Step 2: Convert to fraction form
    704,129.98/971,699.59 = 381,839.98/x
  3. Step 3: Cross multiply
    704,129.98x = 971,699.59 × 381,839.98
  4. Step 4: Simplify right side
    704,129.98x = 371,033,752,011.61
  5. Step 5: Solve for x
    x = 371,033,752,011.61/704,129.98
  6. Step 6: Final answer
    x = 526,939.29

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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.