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Finding the Fourth Proportional to 709,893.52, 979,692.77 and 387,633.60

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Solution

The fourth proportional to 709,893.52, 979,692.77 and 387,633.60 is: 534,956.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,893.52 : 979,692.77 = 387,633.60 : x
  2. Step 2: Convert to fraction form
    709,893.52/979,692.77 = 387,633.60/x
  3. Step 3: Cross multiply
    709,893.52x = 979,692.77 × 387,633.60
  4. Step 4: Simplify right side
    709,893.52x = 379,761,836,298.16
  5. Step 5: Solve for x
    x = 379,761,836,298.16/709,893.52
  6. Step 6: Final answer
    x = 534,956.06

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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.