Home / 714,285.24-985,682.64-392,000.76

Finding the Fourth Proportional to 714,285.24, 985,682.64 and 392,000.76

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Solution

The fourth proportional to 714,285.24, 985,682.64 and 392,000.76 is: 540,944.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,285.24 : 985,682.64 = 392,000.76 : x
  2. Step 2: Convert to fraction form
    714,285.24/985,682.64 = 392,000.76/x
  3. Step 3: Cross multiply
    714,285.24x = 985,682.64 × 392,000.76
  4. Step 4: Simplify right side
    714,285.24x = 386,388,343,998.81
  5. Step 5: Solve for x
    x = 386,388,343,998.81/714,285.24
  6. Step 6: Final answer
    x = 540,944.04

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Half scale
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Double scale
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Similar ratio
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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.