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Finding the Fourth Proportional to 500,628.60, 750,942.90 and 145,654.20

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Solution

The fourth proportional to 500,628.60, 750,942.90 and 145,654.20 is: 218,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,628.60 : 750,942.90 = 145,654.20 : x
  2. Step 2: Convert to fraction form
    500,628.60/750,942.90 = 145,654.20/x
  3. Step 3: Cross multiply
    500,628.60x = 750,942.90 × 145,654.20
  4. Step 4: Simplify right side
    500,628.60x = 109,377,987,345.18
  5. Step 5: Solve for x
    x = 109,377,987,345.18/500,628.60
  6. Step 6: Final answer
    x = 218,481.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.