Home / 879,251.70-1,316,810.76-428,560.14

Finding the Fourth Proportional to 879,251.70, 1,316,810.76 and 428,560.14

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Solution

The fourth proportional to 879,251.70, 1,316,810.76 and 428,560.14 is: 641,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,251.70 : 1,316,810.76 = 428,560.14 : x
  2. Step 2: Convert to fraction form
    879,251.70/1,316,810.76 = 428,560.14/x
  3. Step 3: Cross multiply
    879,251.70x = 1,316,810.76 × 428,560.14
  4. Step 4: Simplify right side
    879,251.70x = 564,332,603,659.11
  5. Step 5: Solve for x
    x = 564,332,603,659.11/879,251.70
  6. Step 6: Final answer
    x = 641,832.83

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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.