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Finding the Fourth Proportional to 911,005.95, 1,363,857 and 477,695.91

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Solution

The fourth proportional to 911,005.95, 1,363,857 and 477,695.91 is: 715,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,005.95 : 1,363,857 = 477,695.91 : x
  2. Step 2: Convert to fraction form
    911,005.95/1,363,857 = 477,695.91/x
  3. Step 3: Cross multiply
    911,005.95x = 1,363,857 × 477,695.91
  4. Step 4: Simplify right side
    911,005.95x = 651,508,910,724.87
  5. Step 5: Solve for x
    x = 651,508,910,724.87/911,005.95
  6. Step 6: Final answer
    x = 715,153.30

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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.