Home / 991,912.68-1,368,853.14-539,213.40

Finding the Fourth Proportional to 991,912.68, 1,368,853.14 and 539,213.40

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Solution

The fourth proportional to 991,912.68, 1,368,853.14 and 539,213.40 is: 744,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,912.68 : 1,368,853.14 = 539,213.40 : x
  2. Step 2: Convert to fraction form
    991,912.68/1,368,853.14 = 539,213.40/x
  3. Step 3: Cross multiply
    991,912.68x = 1,368,853.14 × 539,213.40
  4. Step 4: Simplify right side
    991,912.68x = 738,103,955,720.08
  5. Step 5: Solve for x
    x = 738,103,955,720.08/991,912.68
  6. Step 6: Final answer
    x = 744,121.91

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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.