Home / 991,619.88-1,368,396.90-538,901.16

Finding the Fourth Proportional to 991,619.88, 1,368,396.90 and 538,901.16

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Solution

The fourth proportional to 991,619.88, 1,368,396.90 and 538,901.16 is: 743,662.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,619.88 : 1,368,396.90 = 538,901.16 : x
  2. Step 2: Convert to fraction form
    991,619.88/1,368,396.90 = 538,901.16/x
  3. Step 3: Cross multiply
    991,619.88x = 1,368,396.90 × 538,901.16
  4. Step 4: Simplify right side
    991,619.88x = 737,430,676,750.40
  5. Step 5: Solve for x
    x = 737,430,676,750.40/991,619.88
  6. Step 6: Final answer
    x = 743,662.66

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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.