Home / 1,538,428.80-2,123,000.64-935,011.20

Finding the Fourth Proportional to 1,538,428.80, 2,123,000.64 and 935,011.20

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Solution

The fourth proportional to 1,538,428.80, 2,123,000.64 and 935,011.20 is: 1,290,296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,428.80 : 2,123,000.64 = 935,011.20 : x
  2. Step 2: Convert to fraction form
    1,538,428.80/2,123,000.64 = 935,011.20/x
  3. Step 3: Cross multiply
    1,538,428.80x = 2,123,000.64 × 935,011.20
  4. Step 4: Simplify right side
    1,538,428.80x = 1,985,029,376,007.17
  5. Step 5: Solve for x
    x = 1,985,029,376,007.17/1,538,428.80
  6. Step 6: Final answer
    x = 1,290,296.55

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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.