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Finding the Fourth Proportional to 1,351,753.02, 1,865,292.75 and 807,780.78

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Solution

The fourth proportional to 1,351,753.02, 1,865,292.75 and 807,780.78 is: 1,114,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,753.02 : 1,865,292.75 = 807,780.78 : x
  2. Step 2: Convert to fraction form
    1,351,753.02/1,865,292.75 = 807,780.78/x
  3. Step 3: Cross multiply
    1,351,753.02x = 1,865,292.75 × 807,780.78
  4. Step 4: Simplify right side
    1,351,753.02x = 1,506,747,632,523.35
  5. Step 5: Solve for x
    x = 1,506,747,632,523.35/1,351,753.02
  6. Step 6: Final answer
    x = 1,114,661.93

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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.