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Finding the Fourth Proportional to 680,578, 1,020,789.18 and 181,980.88

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Solution

The fourth proportional to 680,578, 1,020,789.18 and 181,980.88 is: 272,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,578 : 1,020,789.18 = 181,980.88 : x
  2. Step 2: Convert to fraction form
    680,578/1,020,789.18 = 181,980.88/x
  3. Step 3: Cross multiply
    680,578x = 1,020,789.18 × 181,980.88
  4. Step 4: Simplify right side
    680,578x = 185,764,113,270.88
  5. Step 5: Solve for x
    x = 185,764,113,270.88/680,578
  6. Step 6: Final answer
    x = 272,950.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.