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Finding the Fourth Proportional to 700,753.68, 967,041 and 398,947.68

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Solution

The fourth proportional to 700,753.68, 967,041 and 398,947.68 is: 550,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,753.68 : 967,041 = 398,947.68 : x
  2. Step 2: Convert to fraction form
    700,753.68/967,041 = 398,947.68/x
  3. Step 3: Cross multiply
    700,753.68x = 967,041 × 398,947.68
  4. Step 4: Simplify right side
    700,753.68x = 385,798,763,414.88
  5. Step 5: Solve for x
    x = 385,798,763,414.88/700,753.68
  6. Step 6: Final answer
    x = 550,548.32

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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.