Home / 714,309.12-985,743.72-392,024.52

Finding the Fourth Proportional to 714,309.12, 985,743.72 and 392,024.52

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Solution

The fourth proportional to 714,309.12, 985,743.72 and 392,024.52 is: 540,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,309.12 : 985,743.72 = 392,024.52 : x
  2. Step 2: Convert to fraction form
    714,309.12/985,743.72 = 392,024.52/x
  3. Step 3: Cross multiply
    714,309.12x = 985,743.72 × 392,024.52
  4. Step 4: Simplify right side
    714,309.12x = 386,435,708,676.01
  5. Step 5: Solve for x
    x = 386,435,708,676.01/714,309.12
  6. Step 6: Final answer
    x = 540,992.26

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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.