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Finding the Fourth Proportional to 898,458.98, 1,239,864 and 490,559.56

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Solution

The fourth proportional to 898,458.98, 1,239,864 and 490,559.56 is: 676,967.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,458.98 : 1,239,864 = 490,559.56 : x
  2. Step 2: Convert to fraction form
    898,458.98/1,239,864 = 490,559.56/x
  3. Step 3: Cross multiply
    898,458.98x = 1,239,864 × 490,559.56
  4. Step 4: Simplify right side
    898,458.98x = 608,227,135,200.18
  5. Step 5: Solve for x
    x = 608,227,135,200.18/898,458.98
  6. Step 6: Final answer
    x = 676,967.06

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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.