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Finding the Fourth Proportional to 1,198,621.20, 1,799,096.60 and 935,248.40

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Solution

The fourth proportional to 1,198,621.20, 1,799,096.60 and 935,248.40 is: 1,403,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,621.20 : 1,799,096.60 = 935,248.40 : x
  2. Step 2: Convert to fraction form
    1,198,621.20/1,799,096.60 = 935,248.40/x
  3. Step 3: Cross multiply
    1,198,621.20x = 1,799,096.60 × 935,248.40
  4. Step 4: Simplify right side
    1,198,621.20x = 1,682,602,216,595.44
  5. Step 5: Solve for x
    x = 1,682,602,216,595.44/1,198,621.20
  6. Step 6: Final answer
    x = 1,403,781.46

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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.