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Finding the Fourth Proportional to 701,331, 967,836.78 and 399,525

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Solution

The fourth proportional to 701,331, 967,836.78 and 399,525 is: 551,344.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,331 : 967,836.78 = 399,525 : x
  2. Step 2: Convert to fraction form
    701,331/967,836.78 = 399,525/x
  3. Step 3: Cross multiply
    701,331x = 967,836.78 × 399,525
  4. Step 4: Simplify right side
    701,331x = 386,674,989,529.50
  5. Step 5: Solve for x
    x = 386,674,989,529.50/701,331
  6. Step 6: Final answer
    x = 551,344.50

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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.