Home / 1,218,139.76-1,680,884.69-674,242.44

Finding the Fourth Proportional to 1,218,139.76, 1,680,884.69 and 674,242.44

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Solution

The fourth proportional to 1,218,139.76, 1,680,884.69 and 674,242.44 is: 930,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,139.76 : 1,680,884.69 = 674,242.44 : x
  2. Step 2: Convert to fraction form
    1,218,139.76/1,680,884.69 = 674,242.44/x
  3. Step 3: Cross multiply
    1,218,139.76x = 1,680,884.69 × 674,242.44
  4. Step 4: Simplify right side
    1,218,139.76x = 1,133,323,791,373.03
  5. Step 5: Solve for x
    x = 1,133,323,791,373.03/1,218,139.76
  6. Step 6: Final answer
    x = 930,372.55

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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.