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Finding the Fourth Proportional to 976,608, 1,464,921.12 and 345,628.80

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Solution

The fourth proportional to 976,608, 1,464,921.12 and 345,628.80 is: 518,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,608 : 1,464,921.12 = 345,628.80 : x
  2. Step 2: Convert to fraction form
    976,608/1,464,921.12 = 345,628.80/x
  3. Step 3: Cross multiply
    976,608x = 1,464,921.12 × 345,628.80
  4. Step 4: Simplify right side
    976,608x = 506,318,928,800.26
  5. Step 5: Solve for x
    x = 506,318,928,800.26/976,608
  6. Step 6: Final answer
    x = 518,446.43

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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.