Home / 991,127.63-1,367,756.13-538,418.63

Finding the Fourth Proportional to 991,127.63, 1,367,756.13 and 538,418.63

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Solution

The fourth proportional to 991,127.63, 1,367,756.13 and 538,418.63 is: 743,017.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,127.63 : 1,367,756.13 = 538,418.63 : x
  2. Step 2: Convert to fraction form
    991,127.63/1,367,756.13 = 538,418.63/x
  3. Step 3: Cross multiply
    991,127.63x = 1,367,756.13 × 538,418.63
  4. Step 4: Simplify right side
    991,127.63x = 736,425,374,849.92
  5. Step 5: Solve for x
    x = 736,425,374,849.92/991,127.63
  6. Step 6: Final answer
    x = 743,017.71

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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.