Home / 754,821.60-1,131,299.28-380,640.48

Finding the Fourth Proportional to 754,821.60, 1,131,299.28 and 380,640.48

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Solution

The fourth proportional to 754,821.60, 1,131,299.28 and 380,640.48 is: 570,490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,821.60 : 1,131,299.28 = 380,640.48 : x
  2. Step 2: Convert to fraction form
    754,821.60/1,131,299.28 = 380,640.48/x
  3. Step 3: Cross multiply
    754,821.60x = 1,131,299.28 × 380,640.48
  4. Step 4: Simplify right side
    754,821.60x = 430,618,300,962.85
  5. Step 5: Solve for x
    x = 430,618,300,962.85/754,821.60
  6. Step 6: Final answer
    x = 570,490.17

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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.