Home / 693,780.52-957,435.78-391,968.04

Finding the Fourth Proportional to 693,780.52, 957,435.78 and 391,968.04

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Solution

The fourth proportional to 693,780.52, 957,435.78 and 391,968.04 is: 540,926.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,780.52 : 957,435.78 = 391,968.04 : x
  2. Step 2: Convert to fraction form
    693,780.52/957,435.78 = 391,968.04/x
  3. Step 3: Cross multiply
    693,780.52x = 957,435.78 × 391,968.04
  4. Step 4: Simplify right side
    693,780.52x = 375,284,226,112.47
  5. Step 5: Solve for x
    x = 375,284,226,112.47/693,780.52
  6. Step 6: Final answer
    x = 540,926.44

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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.