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Finding the Fourth Proportional to 665,646.89, 997,454.22 and 395,242.53

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Solution

The fourth proportional to 665,646.89, 997,454.22 and 395,242.53 is: 592,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,646.89 : 997,454.22 = 395,242.53 : x
  2. Step 2: Convert to fraction form
    665,646.89/997,454.22 = 395,242.53/x
  3. Step 3: Cross multiply
    665,646.89x = 997,454.22 × 395,242.53
  4. Step 4: Simplify right side
    665,646.89x = 394,236,329,471.98
  5. Step 5: Solve for x
    x = 394,236,329,471.98/665,646.89
  6. Step 6: Final answer
    x = 592,260.45

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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.