Home / 991,976.40-1,487,527.20-392,738.40

Finding the Fourth Proportional to 991,976.40, 1,487,527.20 and 392,738.40

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Solution

The fourth proportional to 991,976.40, 1,487,527.20 and 392,738.40 is: 588,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,976.40 : 1,487,527.20 = 392,738.40 : x
  2. Step 2: Convert to fraction form
    991,976.40/1,487,527.20 = 392,738.40/x
  3. Step 3: Cross multiply
    991,976.40x = 1,487,527.20 × 392,738.40
  4. Step 4: Simplify right side
    991,976.40x = 584,209,052,484.48
  5. Step 5: Solve for x
    x = 584,209,052,484.48/991,976.40
  6. Step 6: Final answer
    x = 588,934.43

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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.