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Finding the Fourth Proportional to 691,982.90, 954,937 and 386,059.34

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Solution

The fourth proportional to 691,982.90, 954,937 and 386,059.34 is: 532,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,982.90 : 954,937 = 386,059.34 : x
  2. Step 2: Convert to fraction form
    691,982.90/954,937 = 386,059.34/x
  3. Step 3: Cross multiply
    691,982.90x = 954,937 × 386,059.34
  4. Step 4: Simplify right side
    691,982.90x = 368,662,347,961.58
  5. Step 5: Solve for x
    x = 368,662,347,961.58/691,982.90
  6. Step 6: Final answer
    x = 532,762.22

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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.