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Finding the Fourth Proportional to 868,937.80, 1,303,406.70 and 794,288.20

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Solution

The fourth proportional to 868,937.80, 1,303,406.70 and 794,288.20 is: 1,191,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,937.80 : 1,303,406.70 = 794,288.20 : x
  2. Step 2: Convert to fraction form
    868,937.80/1,303,406.70 = 794,288.20/x
  3. Step 3: Cross multiply
    868,937.80x = 1,303,406.70 × 794,288.20
  4. Step 4: Simplify right side
    868,937.80x = 1,035,280,561,610.94
  5. Step 5: Solve for x
    x = 1,035,280,561,610.94/868,937.80
  6. Step 6: Final answer
    x = 1,191,432.30

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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.