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Finding the Fourth Proportional to 662,108.93, 992,911.31 and 392,313.20

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Solution

The fourth proportional to 662,108.93, 992,911.31 and 392,313.20 is: 588,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,108.93 : 992,911.31 = 392,313.20 : x
  2. Step 2: Convert to fraction form
    662,108.93/992,911.31 = 392,313.20/x
  3. Step 3: Cross multiply
    662,108.93x = 992,911.31 × 392,313.20
  4. Step 4: Simplify right side
    662,108.93x = 389,532,213,863.00
  5. Step 5: Solve for x
    x = 389,532,213,863.00/662,108.93
  6. Step 6: Final answer
    x = 588,320.44

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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.