Home / 816,634.76-1,225,201.37-417,555.78

Finding the Fourth Proportional to 816,634.76, 1,225,201.37 and 417,555.78

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Solution

The fourth proportional to 816,634.76, 1,225,201.37 and 417,555.78 is: 626,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,634.76 : 1,225,201.37 = 417,555.78 : x
  2. Step 2: Convert to fraction form
    816,634.76/1,225,201.37 = 417,555.78/x
  3. Step 3: Cross multiply
    816,634.76x = 1,225,201.37 × 417,555.78
  4. Step 4: Simplify right side
    816,634.76x = 511,589,918,537.15
  5. Step 5: Solve for x
    x = 511,589,918,537.15/816,634.76
  6. Step 6: Final answer
    x = 626,461.11

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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.