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Finding the Fourth Proportional to 444,870.40, 667,305.60 and 390,632.80

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Solution

The fourth proportional to 444,870.40, 667,305.60 and 390,632.80 is: 585,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,870.40 : 667,305.60 = 390,632.80 : x
  2. Step 2: Convert to fraction form
    444,870.40/667,305.60 = 390,632.80/x
  3. Step 3: Cross multiply
    444,870.40x = 667,305.60 × 390,632.80
  4. Step 4: Simplify right side
    444,870.40x = 260,671,454,983.68
  5. Step 5: Solve for x
    x = 260,671,454,983.68/444,870.40
  6. Step 6: Final answer
    x = 585,949.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.