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Finding the Fourth Proportional to 700,548.75, 966,758.37 and 398,742.75

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Solution

The fourth proportional to 700,548.75, 966,758.37 and 398,742.75 is: 550,265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,548.75 : 966,758.37 = 398,742.75 : x
  2. Step 2: Convert to fraction form
    700,548.75/966,758.37 = 398,742.75/x
  3. Step 3: Cross multiply
    700,548.75x = 966,758.37 × 398,742.75
  4. Step 4: Simplify right side
    700,548.75x = 385,487,891,039.32
  5. Step 5: Solve for x
    x = 385,487,891,039.32/700,548.75
  6. Step 6: Final answer
    x = 550,265.62

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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.