Home / 813,620.40-1,123,243.05-555,884.88

Finding the Fourth Proportional to 813,620.40, 1,123,243.05 and 555,884.88

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Solution

The fourth proportional to 813,620.40, 1,123,243.05 and 555,884.88 is: 767,426.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,620.40 : 1,123,243.05 = 555,884.88 : x
  2. Step 2: Convert to fraction form
    813,620.40/1,123,243.05 = 555,884.88/x
  3. Step 3: Cross multiply
    813,620.40x = 1,123,243.05 × 555,884.88
  4. Step 4: Simplify right side
    813,620.40x = 624,393,828,060.08
  5. Step 5: Solve for x
    x = 624,393,828,060.08/813,620.40
  6. Step 6: Final answer
    x = 767,426.47

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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.