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Finding the Fourth Proportional to 671,746, 927,039.42 and 396,114.88

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Solution

The fourth proportional to 671,746, 927,039.42 and 396,114.88 is: 546,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,746 : 927,039.42 = 396,114.88 : x
  2. Step 2: Convert to fraction form
    671,746/927,039.42 = 396,114.88/x
  3. Step 3: Cross multiply
    671,746x = 927,039.42 × 396,114.88
  4. Step 4: Simplify right side
    671,746x = 367,214,108,608.57
  5. Step 5: Solve for x
    x = 367,214,108,608.57/671,746
  6. Step 6: Final answer
    x = 546,656.19

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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.