Home / 1,272,977.02-1,756,278.31-721,633.58

Finding the Fourth Proportional to 1,272,977.02, 1,756,278.31 and 721,633.58

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Solution

The fourth proportional to 1,272,977.02, 1,756,278.31 and 721,633.58 is: 995,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,977.02 : 1,756,278.31 = 721,633.58 : x
  2. Step 2: Convert to fraction form
    1,272,977.02/1,756,278.31 = 721,633.58/x
  3. Step 3: Cross multiply
    1,272,977.02x = 1,756,278.31 × 721,633.58
  4. Step 4: Simplify right side
    1,272,977.02x = 1,267,389,391,932.09
  5. Step 5: Solve for x
    x = 1,267,389,391,932.09/1,272,977.02
  6. Step 6: Final answer
    x = 995,610.58

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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.