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Finding the Fourth Proportional to 658,059.80, 908,122.86 and 356,253.80

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Solution

The fourth proportional to 658,059.80, 908,122.86 and 356,253.80 is: 491,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,059.80 : 908,122.86 = 356,253.80 : x
  2. Step 2: Convert to fraction form
    658,059.80/908,122.86 = 356,253.80/x
  3. Step 3: Cross multiply
    658,059.80x = 908,122.86 × 356,253.80
  4. Step 4: Simplify right side
    658,059.80x = 323,522,219,741.87
  5. Step 5: Solve for x
    x = 323,522,219,741.87/658,059.80
  6. Step 6: Final answer
    x = 491,630.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.