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Finding the Fourth Proportional to 997,659.80, 1,496,489.70 and 698,478.20

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Solution

The fourth proportional to 997,659.80, 1,496,489.70 and 698,478.20 is: 1,047,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,659.80 : 1,496,489.70 = 698,478.20 : x
  2. Step 2: Convert to fraction form
    997,659.80/1,496,489.70 = 698,478.20/x
  3. Step 3: Cross multiply
    997,659.80x = 1,496,489.70 × 698,478.20
  4. Step 4: Simplify right side
    997,659.80x = 1,045,265,431,974.54
  5. Step 5: Solve for x
    x = 1,045,265,431,974.54/997,659.80
  6. Step 6: Final answer
    x = 1,047,717.30

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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.