Home / 748,462.75-1,121,364.10-428,601.85

Finding the Fourth Proportional to 748,462.75, 1,121,364.10 and 428,601.85

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Solution

The fourth proportional to 748,462.75, 1,121,364.10 and 428,601.85 is: 642,141.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,462.75 : 1,121,364.10 = 428,601.85 : x
  2. Step 2: Convert to fraction form
    748,462.75/1,121,364.10 = 428,601.85/x
  3. Step 3: Cross multiply
    748,462.75x = 1,121,364.10 × 428,601.85
  4. Step 4: Simplify right side
    748,462.75x = 480,618,725,515.93
  5. Step 5: Solve for x
    x = 480,618,725,515.93/748,462.75
  6. Step 6: Final answer
    x = 642,141.14

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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.