Home / 908,629.74-1,253,879.64-521,508.87

Finding the Fourth Proportional to 908,629.74, 1,253,879.64 and 521,508.87

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Solution

The fourth proportional to 908,629.74, 1,253,879.64 and 521,508.87 is: 719,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,629.74 : 1,253,879.64 = 521,508.87 : x
  2. Step 2: Convert to fraction form
    908,629.74/1,253,879.64 = 521,508.87/x
  3. Step 3: Cross multiply
    908,629.74x = 1,253,879.64 × 521,508.87
  4. Step 4: Simplify right side
    908,629.74x = 653,909,354,172.41
  5. Step 5: Solve for x
    x = 653,909,354,172.41/908,629.74
  6. Step 6: Final answer
    x = 719,665.37

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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.