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Finding the Fourth Proportional to 939,161, 1,408,962.65 and 747,759.35

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Solution

The fourth proportional to 939,161, 1,408,962.65 and 747,759.35 is: 1,121,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,161 : 1,408,962.65 = 747,759.35 : x
  2. Step 2: Convert to fraction form
    939,161/1,408,962.65 = 747,759.35/x
  3. Step 3: Cross multiply
    939,161x = 1,408,962.65 × 747,759.35
  4. Step 4: Simplify right side
    939,161x = 1,053,564,995,338.28
  5. Step 5: Solve for x
    x = 1,053,564,995,338.28/939,161
  6. Step 6: Final answer
    x = 1,121,815.10

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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.