Home / 391,579.04-539,901.84-331,045.28

Finding the Fourth Proportional to 391,579.04, 539,901.84 and 331,045.28

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Solution

The fourth proportional to 391,579.04, 539,901.84 and 331,045.28 is: 456,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,579.04 : 539,901.84 = 331,045.28 : x
  2. Step 2: Convert to fraction form
    391,579.04/539,901.84 = 331,045.28/x
  3. Step 3: Cross multiply
    391,579.04x = 539,901.84 × 331,045.28
  4. Step 4: Simplify right side
    391,579.04x = 178,731,955,795.32
  5. Step 5: Solve for x
    x = 178,731,955,795.32/391,579.04
  6. Step 6: Final answer
    x = 456,439.03

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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.