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Finding the Fourth Proportional to 1,351,754.02, 1,865,294.13 and 807,781.78

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Solution

The fourth proportional to 1,351,754.02, 1,865,294.13 and 807,781.78 is: 1,114,663.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,754.02 : 1,865,294.13 = 807,781.78 : x
  2. Step 2: Convert to fraction form
    1,351,754.02/1,865,294.13 = 807,781.78/x
  3. Step 3: Cross multiply
    1,351,754.02x = 1,865,294.13 × 807,781.78
  4. Step 4: Simplify right side
    1,351,754.02x = 1,506,750,612,554.95
  5. Step 5: Solve for x
    x = 1,506,750,612,554.95/1,351,754.02
  6. Step 6: Final answer
    x = 1,114,663.31

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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.