Home / 649,732.15-896,867.78-391,618.32

Finding the Fourth Proportional to 649,732.15, 896,867.78 and 391,618.32

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Solution

The fourth proportional to 649,732.15, 896,867.78 and 391,618.32 is: 540,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,732.15 : 896,867.78 = 391,618.32 : x
  2. Step 2: Convert to fraction form
    649,732.15/896,867.78 = 391,618.32/x
  3. Step 3: Cross multiply
    649,732.15x = 896,867.78 × 391,618.32
  4. Step 4: Simplify right side
    649,732.15x = 351,229,853,265.73
  5. Step 5: Solve for x
    x = 351,229,853,265.73/649,732.15
  6. Step 6: Final answer
    x = 540,576.38

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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.