Home / 391,244.80-586,867.20-311,929.60

Finding the Fourth Proportional to 391,244.80, 586,867.20 and 311,929.60

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Solution

The fourth proportional to 391,244.80, 586,867.20 and 311,929.60 is: 467,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,244.80 : 586,867.20 = 311,929.60 : x
  2. Step 2: Convert to fraction form
    391,244.80/586,867.20 = 311,929.60/x
  3. Step 3: Cross multiply
    391,244.80x = 586,867.20 × 311,929.60
  4. Step 4: Simplify right side
    391,244.80x = 183,061,250,949.12
  5. Step 5: Solve for x
    x = 183,061,250,949.12/391,244.80
  6. Step 6: Final answer
    x = 467,894.40

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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.