Home / 649,579.66-896,454.03-391,538.61

Finding the Fourth Proportional to 649,579.66, 896,454.03 and 391,538.61

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Solution

The fourth proportional to 649,579.66, 896,454.03 and 391,538.61 is: 540,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,579.66 : 896,454.03 = 391,538.61 : x
  2. Step 2: Convert to fraction form
    649,579.66/896,454.03 = 391,538.61/x
  3. Step 3: Cross multiply
    649,579.66x = 896,454.03 × 391,538.61
  4. Step 4: Simplify right side
    649,579.66x = 350,996,366,303.37
  5. Step 5: Solve for x
    x = 350,996,366,303.37/649,579.66
  6. Step 6: Final answer
    x = 540,343.83

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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.