Home / 991,737.88-1,487,015.52-392,785

Finding the Fourth Proportional to 991,737.88, 1,487,015.52 and 392,785

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Solution

The fourth proportional to 991,737.88, 1,487,015.52 and 392,785 is: 588,943.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,737.88 : 1,487,015.52 = 392,785 : x
  2. Step 2: Convert to fraction form
    991,737.88/1,487,015.52 = 392,785/x
  3. Step 3: Cross multiply
    991,737.88x = 1,487,015.52 × 392,785
  4. Step 4: Simplify right side
    991,737.88x = 584,077,391,023.20
  5. Step 5: Solve for x
    x = 584,077,391,023.20/991,737.88
  6. Step 6: Final answer
    x = 588,943.31

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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.