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Finding the Fourth Proportional to 697,791.64, 962,948.82 and 391,880.92

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Solution

The fourth proportional to 697,791.64, 962,948.82 and 391,880.92 is: 540,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,791.64 : 962,948.82 = 391,880.92 : x
  2. Step 2: Convert to fraction form
    697,791.64/962,948.82 = 391,880.92/x
  3. Step 3: Cross multiply
    697,791.64x = 962,948.82 × 391,880.92
  4. Step 4: Simplify right side
    697,791.64x = 377,361,269,494.51
  5. Step 5: Solve for x
    x = 377,361,269,494.51/697,791.64
  6. Step 6: Final answer
    x = 540,793.62

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1.5x scale

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.