Home / 724,394.89-1,086,149.47-345,431.53

Finding the Fourth Proportional to 724,394.89, 1,086,149.47 and 345,431.53

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Solution

The fourth proportional to 724,394.89, 1,086,149.47 and 345,431.53 is: 517,936.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,394.89 : 1,086,149.47 = 345,431.53 : x
  2. Step 2: Convert to fraction form
    724,394.89/1,086,149.47 = 345,431.53/x
  3. Step 3: Cross multiply
    724,394.89x = 1,086,149.47 × 345,431.53
  4. Step 4: Simplify right side
    724,394.89x = 375,190,276,377.95
  5. Step 5: Solve for x
    x = 375,190,276,377.95/724,394.89
  6. Step 6: Final answer
    x = 517,936.12

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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.