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Finding the Fourth Proportional to 829,061.80, 1,241,843.10 and 740,415.40

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Solution

The fourth proportional to 829,061.80, 1,241,843.10 and 740,415.40 is: 1,109,060.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,061.80 : 1,241,843.10 = 740,415.40 : x
  2. Step 2: Convert to fraction form
    829,061.80/1,241,843.10 = 740,415.40/x
  3. Step 3: Cross multiply
    829,061.80x = 1,241,843.10 × 740,415.40
  4. Step 4: Simplify right side
    829,061.80x = 919,479,755,623.74
  5. Step 5: Solve for x
    x = 919,479,755,623.74/829,061.80
  6. Step 6: Final answer
    x = 1,109,060.57

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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.