Home / 858,311.61-1,287,467.42-457,738.80

Finding the Fourth Proportional to 858,311.61, 1,287,467.42 and 457,738.80

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Solution

The fourth proportional to 858,311.61, 1,287,467.42 and 457,738.80 is: 686,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,311.61 : 1,287,467.42 = 457,738.80 : x
  2. Step 2: Convert to fraction form
    858,311.61/1,287,467.42 = 457,738.80/x
  3. Step 3: Cross multiply
    858,311.61x = 1,287,467.42 × 457,738.80
  4. Step 4: Simplify right side
    858,311.61x = 589,323,789,581.20
  5. Step 5: Solve for x
    x = 589,323,789,581.20/858,311.61
  6. Step 6: Final answer
    x = 686,608.20

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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.