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Finding the Fourth Proportional to 676,391.76, 933,387.37 and 370,469.48

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Solution

The fourth proportional to 676,391.76, 933,387.37 and 370,469.48 is: 511,229.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,391.76 : 933,387.37 = 370,469.48 : x
  2. Step 2: Convert to fraction form
    676,391.76/933,387.37 = 370,469.48/x
  3. Step 3: Cross multiply
    676,391.76x = 933,387.37 × 370,469.48
  4. Step 4: Simplify right side
    676,391.76x = 345,791,528,009.36
  5. Step 5: Solve for x
    x = 345,791,528,009.36/676,391.76
  6. Step 6: Final answer
    x = 511,229.66

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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.