Home / 714,287.24-985,685.40-392,002.76

Finding the Fourth Proportional to 714,287.24, 985,685.40 and 392,002.76

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Solution

The fourth proportional to 714,287.24, 985,685.40 and 392,002.76 is: 540,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,287.24 : 985,685.40 = 392,002.76 : x
  2. Step 2: Convert to fraction form
    714,287.24/985,685.40 = 392,002.76/x
  3. Step 3: Cross multiply
    714,287.24x = 985,685.40 × 392,002.76
  4. Step 4: Simplify right side
    714,287.24x = 386,391,397,291.70
  5. Step 5: Solve for x
    x = 386,391,397,291.70/714,287.24
  6. Step 6: Final answer
    x = 540,946.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.