Home / 714,296.76-985,726.42-392,012.07

Finding the Fourth Proportional to 714,296.76, 985,726.42 and 392,012.07

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Solution

The fourth proportional to 714,296.76, 985,726.42 and 392,012.07 is: 540,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,296.76 : 985,726.42 = 392,012.07 : x
  2. Step 2: Convert to fraction form
    714,296.76/985,726.42 = 392,012.07/x
  3. Step 3: Cross multiply
    714,296.76x = 985,726.42 × 392,012.07
  4. Step 4: Simplify right side
    714,296.76x = 386,416,654,357.89
  5. Step 5: Solve for x
    x = 386,416,654,357.89/714,296.76
  6. Step 6: Final answer
    x = 540,974.95

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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.