Home / 715,077.54-986,812.88-392,794.83

Finding the Fourth Proportional to 715,077.54, 986,812.88 and 392,794.83

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Solution

The fourth proportional to 715,077.54, 986,812.88 and 392,794.83 is: 542,060.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,077.54 : 986,812.88 = 392,794.83 : x
  2. Step 2: Convert to fraction form
    715,077.54/986,812.88 = 392,794.83/x
  3. Step 3: Cross multiply
    715,077.54x = 986,812.88 × 392,794.83
  4. Step 4: Simplify right side
    715,077.54x = 387,614,997,441.41
  5. Step 5: Solve for x
    x = 387,614,997,441.41/715,077.54
  6. Step 6: Final answer
    x = 542,060.09

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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.