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Finding the Fourth Proportional to 708,179.40, 977,275.08 and 385,891.56

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Solution

The fourth proportional to 708,179.40, 977,275.08 and 385,891.56 is: 532,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,179.40 : 977,275.08 = 385,891.56 : x
  2. Step 2: Convert to fraction form
    708,179.40/977,275.08 = 385,891.56/x
  3. Step 3: Cross multiply
    708,179.40x = 977,275.08 × 385,891.56
  4. Step 4: Simplify right side
    708,179.40x = 377,122,205,170.33
  5. Step 5: Solve for x
    x = 377,122,205,170.33/708,179.40
  6. Step 6: Final answer
    x = 532,523.55

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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.