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Finding the Fourth Proportional to 500,078.43, 690,102.86 and 270,630.68

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Solution

The fourth proportional to 500,078.43, 690,102.86 and 270,630.68 is: 373,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,078.43 : 690,102.86 = 270,630.68 : x
  2. Step 2: Convert to fraction form
    500,078.43/690,102.86 = 270,630.68/x
  3. Step 3: Cross multiply
    500,078.43x = 690,102.86 × 270,630.68
  4. Step 4: Simplify right side
    500,078.43x = 186,763,001,468.08
  5. Step 5: Solve for x
    x = 186,763,001,468.08/500,078.43
  6. Step 6: Final answer
    x = 373,467.42

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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.