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Finding the Fourth Proportional to 1,266,997.04, 1,747,793.04 and 783,407.60

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Solution

The fourth proportional to 1,266,997.04, 1,747,793.04 and 783,407.60 is: 1,080,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,997.04 : 1,747,793.04 = 783,407.60 : x
  2. Step 2: Convert to fraction form
    1,266,997.04/1,747,793.04 = 783,407.60/x
  3. Step 3: Cross multiply
    1,266,997.04x = 1,747,793.04 × 783,407.60
  4. Step 4: Simplify right side
    1,266,997.04x = 1,369,234,350,763.10
  5. Step 5: Solve for x
    x = 1,369,234,350,763.10/1,266,997.04
  6. Step 6: Final answer
    x = 1,080,692.62

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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.