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Finding the Fourth Proportional to 500,367.10, 690,501.42 and 270,920.44

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Solution

The fourth proportional to 500,367.10, 690,501.42 and 270,920.44 is: 373,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,367.10 : 690,501.42 = 270,920.44 : x
  2. Step 2: Convert to fraction form
    500,367.10/690,501.42 = 270,920.44/x
  3. Step 3: Cross multiply
    500,367.10x = 690,501.42 × 270,920.44
  4. Step 4: Simplify right side
    500,367.10x = 187,070,948,527.03
  5. Step 5: Solve for x
    x = 187,070,948,527.03/500,367.10
  6. Step 6: Final answer
    x = 373,867.40

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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.