Home / 811,129.88-1,216,697.48-305,555.17

Finding the Fourth Proportional to 811,129.88, 1,216,697.48 and 305,555.17

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Solution

The fourth proportional to 811,129.88, 1,216,697.48 and 305,555.17 is: 458,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,129.88 : 1,216,697.48 = 305,555.17 : x
  2. Step 2: Convert to fraction form
    811,129.88/1,216,697.48 = 305,555.17/x
  3. Step 3: Cross multiply
    811,129.88x = 1,216,697.48 × 305,555.17
  4. Step 4: Simplify right side
    811,129.88x = 371,768,205,339.97
  5. Step 5: Solve for x
    x = 371,768,205,339.97/811,129.88
  6. Step 6: Final answer
    x = 458,333.76

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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.