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Finding the Fourth Proportional to 679,645.42, 937,878.57 and 373,734.69

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Solution

The fourth proportional to 679,645.42, 937,878.57 and 373,734.69 is: 515,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,645.42 : 937,878.57 = 373,734.69 : x
  2. Step 2: Convert to fraction form
    679,645.42/937,878.57 = 373,734.69/x
  3. Step 3: Cross multiply
    679,645.42x = 937,878.57 × 373,734.69
  4. Step 4: Simplify right side
    679,645.42x = 350,517,756,616.59
  5. Step 5: Solve for x
    x = 350,517,756,616.59/679,645.42
  6. Step 6: Final answer
    x = 515,736.22

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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.