Home / 861,320.76-1,291,488.80-262,104.72

Finding the Fourth Proportional to 861,320.76, 1,291,488.80 and 262,104.72

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Solution

The fourth proportional to 861,320.76, 1,291,488.80 and 262,104.72 is: 393,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,320.76 : 1,291,488.80 = 262,104.72 : x
  2. Step 2: Convert to fraction form
    861,320.76/1,291,488.80 = 262,104.72/x
  3. Step 3: Cross multiply
    861,320.76x = 1,291,488.80 × 262,104.72
  4. Step 4: Simplify right side
    861,320.76x = 338,505,310,307.14
  5. Step 5: Solve for x
    x = 338,505,310,307.14/861,320.76
  6. Step 6: Final answer
    x = 393,007.26

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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.