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Finding the Fourth Proportional to 658,089.90, 908,080.58 and 386,058.54

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Solution

The fourth proportional to 658,089.90, 908,080.58 and 386,058.54 is: 532,711.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,089.90 : 908,080.58 = 386,058.54 : x
  2. Step 2: Convert to fraction form
    658,089.90/908,080.58 = 386,058.54/x
  3. Step 3: Cross multiply
    658,089.90x = 908,080.58 × 386,058.54
  4. Step 4: Simplify right side
    658,089.90x = 350,572,260,986.86
  5. Step 5: Solve for x
    x = 350,572,260,986.86/658,089.90
  6. Step 6: Final answer
    x = 532,711.81

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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.