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Finding the Fourth Proportional to 663,072.30, 995,475.69 and 393,692.22

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Solution

The fourth proportional to 663,072.30, 995,475.69 and 393,692.22 is: 591,053.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,072.30 : 995,475.69 = 393,692.22 : x
  2. Step 2: Convert to fraction form
    663,072.30/995,475.69 = 393,692.22/x
  3. Step 3: Cross multiply
    663,072.30x = 995,475.69 × 393,692.22
  4. Step 4: Simplify right side
    663,072.30x = 391,911,034,352.13
  5. Step 5: Solve for x
    x = 391,911,034,352.13/663,072.30
  6. Step 6: Final answer
    x = 591,053.24

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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.