Home / 1,272,980.77-1,756,283.47-721,637.33

Finding the Fourth Proportional to 1,272,980.77, 1,756,283.47 and 721,637.33

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Solution

The fourth proportional to 1,272,980.77, 1,756,283.47 and 721,637.33 is: 995,615.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,980.77 : 1,756,283.47 = 721,637.33 : x
  2. Step 2: Convert to fraction form
    1,272,980.77/1,756,283.47 = 721,637.33/x
  3. Step 3: Cross multiply
    1,272,980.77x = 1,756,283.47 × 721,637.33
  4. Step 4: Simplify right side
    1,272,980.77x = 1,267,399,714,013.94
  5. Step 5: Solve for x
    x = 1,267,399,714,013.94/1,272,980.77
  6. Step 6: Final answer
    x = 995,615.76

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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.