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Finding the Fourth Proportional to 658,658.27, 908,925.13 and 372,172.21

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Solution

The fourth proportional to 658,658.27, 908,925.13 and 372,172.21 is: 513,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,658.27 : 908,925.13 = 372,172.21 : x
  2. Step 2: Convert to fraction form
    658,658.27/908,925.13 = 372,172.21/x
  3. Step 3: Cross multiply
    658,658.27x = 908,925.13 × 372,172.21
  4. Step 4: Simplify right side
    658,658.27x = 338,276,674,356.64
  5. Step 5: Solve for x
    x = 338,276,674,356.64/658,658.27
  6. Step 6: Final answer
    x = 513,584.49

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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.