Home / 979,840.11-1,469,382.22-380,722.39

Finding the Fourth Proportional to 979,840.11, 1,469,382.22 and 380,722.39

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Solution

The fourth proportional to 979,840.11, 1,469,382.22 and 380,722.39 is: 570,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,840.11 : 1,469,382.22 = 380,722.39 : x
  2. Step 2: Convert to fraction form
    979,840.11/1,469,382.22 = 380,722.39/x
  3. Step 3: Cross multiply
    979,840.11x = 1,469,382.22 × 380,722.39
  4. Step 4: Simplify right side
    979,840.11x = 559,426,710,621.91
  5. Step 5: Solve for x
    x = 559,426,710,621.91/979,840.11
  6. Step 6: Final answer
    x = 570,936.73

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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.