Home / 991,745.17-1,368,512.73-556,180.38

Finding the Fourth Proportional to 991,745.17, 1,368,512.73 and 556,180.38

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Solution

The fourth proportional to 991,745.17, 1,368,512.73 and 556,180.38 is: 767,475.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,745.17 : 1,368,512.73 = 556,180.38 : x
  2. Step 2: Convert to fraction form
    991,745.17/1,368,512.73 = 556,180.38/x
  3. Step 3: Cross multiply
    991,745.17x = 1,368,512.73 × 556,180.38
  4. Step 4: Simplify right side
    991,745.17x = 761,139,930,206.24
  5. Step 5: Solve for x
    x = 761,139,930,206.24/991,745.17
  6. Step 6: Final answer
    x = 767,475.31

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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.