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Finding the Fourth Proportional to 579,863.58, 869,822.75 and 478,473.58

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Solution

The fourth proportional to 579,863.58, 869,822.75 and 478,473.58 is: 717,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,863.58 : 869,822.75 = 478,473.58 : x
  2. Step 2: Convert to fraction form
    579,863.58/869,822.75 = 478,473.58/x
  3. Step 3: Cross multiply
    579,863.58x = 869,822.75 × 478,473.58
  4. Step 4: Simplify right side
    579,863.58x = 416,187,205,157.95
  5. Step 5: Solve for x
    x = 416,187,205,157.95/579,863.58
  6. Step 6: Final answer
    x = 717,732.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.