Home / 992,346.80-1,488,059.40-431,092.40

Finding the Fourth Proportional to 992,346.80, 1,488,059.40 and 431,092.40

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Solution

The fourth proportional to 992,346.80, 1,488,059.40 and 431,092.40 is: 646,438.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,346.80 : 1,488,059.40 = 431,092.40 : x
  2. Step 2: Convert to fraction form
    992,346.80/1,488,059.40 = 431,092.40/x
  3. Step 3: Cross multiply
    992,346.80x = 1,488,059.40 × 431,092.40
  4. Step 4: Simplify right side
    992,346.80x = 641,491,098,088.56
  5. Step 5: Solve for x
    x = 641,491,098,088.56/992,346.80
  6. Step 6: Final answer
    x = 646,438.42

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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.