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Finding the Fourth Proportional to 700,689.56, 966,951.45 and 378,399.60

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Solution

The fourth proportional to 700,689.56, 966,951.45 and 378,399.60 is: 522,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,689.56 : 966,951.45 = 378,399.60 : x
  2. Step 2: Convert to fraction form
    700,689.56/966,951.45 = 378,399.60/x
  3. Step 3: Cross multiply
    700,689.56x = 966,951.45 × 378,399.60
  4. Step 4: Simplify right side
    700,689.56x = 365,894,041,899.42
  5. Step 5: Solve for x
    x = 365,894,041,899.42/700,689.56
  6. Step 6: Final answer
    x = 522,191.37

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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.