Home / 979,723.78-1,469,678.43-380,731.13

Finding the Fourth Proportional to 979,723.78, 1,469,678.43 and 380,731.13

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Solution

The fourth proportional to 979,723.78, 1,469,678.43 and 380,731.13 is: 571,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,723.78 : 1,469,678.43 = 380,731.13 : x
  2. Step 2: Convert to fraction form
    979,723.78/1,469,678.43 = 380,731.13/x
  3. Step 3: Cross multiply
    979,723.78x = 1,469,678.43 × 380,731.13
  4. Step 4: Simplify right side
    979,723.78x = 559,552,329,390.53
  5. Step 5: Solve for x
    x = 559,552,329,390.53/979,723.78
  6. Step 6: Final answer
    x = 571,132.74

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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.