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Finding the Fourth Proportional to 978,945.88, 1,466,510.66 and 551,174.15

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Solution

The fourth proportional to 978,945.88, 1,466,510.66 and 551,174.15 is: 825,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,945.88 : 1,466,510.66 = 551,174.15 : x
  2. Step 2: Convert to fraction form
    978,945.88/1,466,510.66 = 551,174.15/x
  3. Step 3: Cross multiply
    978,945.88x = 1,466,510.66 × 551,174.15
  4. Step 4: Simplify right side
    978,945.88x = 808,302,766,491.44
  5. Step 5: Solve for x
    x = 808,302,766,491.44/978,945.88
  6. Step 6: Final answer
    x = 825,686.88

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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.