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Finding the Fourth Proportional to 680,570.76, 939,187.64 and 378,836.04

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Solution

The fourth proportional to 680,570.76, 939,187.64 and 378,836.04 is: 522,793.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,570.76 : 939,187.64 = 378,836.04 : x
  2. Step 2: Convert to fraction form
    680,570.76/939,187.64 = 378,836.04/x
  3. Step 3: Cross multiply
    680,570.76x = 939,187.64 × 378,836.04
  4. Step 4: Simplify right side
    680,570.76x = 355,798,126,354.55
  5. Step 5: Solve for x
    x = 355,798,126,354.55/680,570.76
  6. Step 6: Final answer
    x = 522,793.73

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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.