Home / 862,231.46-1,189,879.65-499,865.38

Finding the Fourth Proportional to 862,231.46, 1,189,879.65 and 499,865.38

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Solution

The fourth proportional to 862,231.46, 1,189,879.65 and 499,865.38 is: 689,814.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,231.46 : 1,189,879.65 = 499,865.38 : x
  2. Step 2: Convert to fraction form
    862,231.46/1,189,879.65 = 499,865.38/x
  3. Step 3: Cross multiply
    862,231.46x = 1,189,879.65 × 499,865.38
  4. Step 4: Simplify right side
    862,231.46x = 594,779,643,401.52
  5. Step 5: Solve for x
    x = 594,779,643,401.52/862,231.46
  6. Step 6: Final answer
    x = 689,814.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.