Home / 1,074,780.20-1,482,189.78-666,948.20

Finding the Fourth Proportional to 1,074,780.20, 1,482,189.78 and 666,948.20

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Solution

The fourth proportional to 1,074,780.20, 1,482,189.78 and 666,948.20 is: 919,763.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,780.20 : 1,482,189.78 = 666,948.20 : x
  2. Step 2: Convert to fraction form
    1,074,780.20/1,482,189.78 = 666,948.20/x
  3. Step 3: Cross multiply
    1,074,780.20x = 1,482,189.78 × 666,948.20
  4. Step 4: Simplify right side
    1,074,780.20x = 988,543,805,829.40
  5. Step 5: Solve for x
    x = 988,543,805,829.40/1,074,780.20
  6. Step 6: Final answer
    x = 919,763.69

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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.