Home / 714,269.24-985,660.55-391,984.72

Finding the Fourth Proportional to 714,269.24, 985,660.55 and 391,984.72

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Solution

The fourth proportional to 714,269.24, 985,660.55 and 391,984.72 is: 540,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,269.24 : 985,660.55 = 391,984.72 : x
  2. Step 2: Convert to fraction form
    714,269.24/985,660.55 = 391,984.72/x
  3. Step 3: Cross multiply
    714,269.24x = 985,660.55 × 391,984.72
  4. Step 4: Simplify right side
    714,269.24x = 386,363,871,752.66
  5. Step 5: Solve for x
    x = 386,363,871,752.66/714,269.24
  6. Step 6: Final answer
    x = 540,921.90

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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.