Home / 858,399.20-1,287,598.80-522,099.35

Finding the Fourth Proportional to 858,399.20, 1,287,598.80 and 522,099.35

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Solution

The fourth proportional to 858,399.20, 1,287,598.80 and 522,099.35 is: 783,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,399.20 : 1,287,598.80 = 522,099.35 : x
  2. Step 2: Convert to fraction form
    858,399.20/1,287,598.80 = 522,099.35/x
  3. Step 3: Cross multiply
    858,399.20x = 1,287,598.80 × 522,099.35
  4. Step 4: Simplify right side
    858,399.20x = 672,254,496,540.78
  5. Step 5: Solve for x
    x = 672,254,496,540.78/858,399.20
  6. Step 6: Final answer
    x = 783,149.03

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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.