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Finding the Fourth Proportional to 665,505.68, 997,692.76 and 291,249.04

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Solution

The fourth proportional to 665,505.68, 997,692.76 and 291,249.04 is: 436,625.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,505.68 : 997,692.76 = 291,249.04 : x
  2. Step 2: Convert to fraction form
    665,505.68/997,692.76 = 291,249.04/x
  3. Step 3: Cross multiply
    665,505.68x = 997,692.76 × 291,249.04
  4. Step 4: Simplify right side
    665,505.68x = 290,577,058,564.95
  5. Step 5: Solve for x
    x = 290,577,058,564.95/665,505.68
  6. Step 6: Final answer
    x = 436,625.96

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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.