Home / 754,039.80-1,131,059.70-455,441.40

Finding the Fourth Proportional to 754,039.80, 1,131,059.70 and 455,441.40

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Solution

The fourth proportional to 754,039.80, 1,131,059.70 and 455,441.40 is: 683,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,039.80 : 1,131,059.70 = 455,441.40 : x
  2. Step 2: Convert to fraction form
    754,039.80/1,131,059.70 = 455,441.40/x
  3. Step 3: Cross multiply
    754,039.80x = 1,131,059.70 × 455,441.40
  4. Step 4: Simplify right side
    754,039.80x = 515,131,413,251.58
  5. Step 5: Solve for x
    x = 515,131,413,251.58/754,039.80
  6. Step 6: Final answer
    x = 683,162.10

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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.