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Finding the Fourth Proportional to 898,879.84, 1,240,446.80 and 490,982

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Solution

The fourth proportional to 898,879.84, 1,240,446.80 and 490,982 is: 677,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,879.84 : 1,240,446.80 = 490,982 : x
  2. Step 2: Convert to fraction form
    898,879.84/1,240,446.80 = 490,982/x
  3. Step 3: Cross multiply
    898,879.84x = 1,240,446.80 × 490,982
  4. Step 4: Simplify right side
    898,879.84x = 609,037,050,757.60
  5. Step 5: Solve for x
    x = 609,037,050,757.60/898,879.84
  6. Step 6: Final answer
    x = 677,551.13

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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.