Home / 714,305.30-985,749.24-392,008.47

Finding the Fourth Proportional to 714,305.30, 985,749.24 and 392,008.47

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Solution

The fourth proportional to 714,305.30, 985,749.24 and 392,008.47 is: 540,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,305.30 : 985,749.24 = 392,008.47 : x
  2. Step 2: Convert to fraction form
    714,305.30/985,749.24 = 392,008.47/x
  3. Step 3: Cross multiply
    714,305.30x = 985,749.24 × 392,008.47
  4. Step 4: Simplify right side
    714,305.30x = 386,422,056,080.57
  5. Step 5: Solve for x
    x = 386,422,056,080.57/714,305.30
  6. Step 6: Final answer
    x = 540,976.05

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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.