Home / 1,387,958.10-2,085,047.55-1,331,279.70

Finding the Fourth Proportional to 1,387,958.10, 2,085,047.55 and 1,331,279.70

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Solution

The fourth proportional to 1,387,958.10, 2,085,047.55 and 1,331,279.70 is: 1,999,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,958.10 : 2,085,047.55 = 1,331,279.70 : x
  2. Step 2: Convert to fraction form
    1,387,958.10/2,085,047.55 = 1,331,279.70/x
  3. Step 3: Cross multiply
    1,387,958.10x = 2,085,047.55 × 1,331,279.70
  4. Step 4: Simplify right side
    1,387,958.10x = 2,775,781,476,849.74
  5. Step 5: Solve for x
    x = 2,775,781,476,849.74/1,387,958.10
  6. Step 6: Final answer
    x = 1,999,902.93

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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.