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Finding the Fourth Proportional to 891,119.92, 1,337,030 and 392,134

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Solution

The fourth proportional to 891,119.92, 1,337,030 and 392,134 is: 588,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,119.92 : 1,337,030 = 392,134 : x
  2. Step 2: Convert to fraction form
    891,119.92/1,337,030 = 392,134/x
  3. Step 3: Cross multiply
    891,119.92x = 1,337,030 × 392,134
  4. Step 4: Simplify right side
    891,119.92x = 524,294,922,020
  5. Step 5: Solve for x
    x = 524,294,922,020/891,119.92
  6. Step 6: Final answer
    x = 588,355.07

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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.