Home / 750,643.12-1,123,139.60-526,441.20

Finding the Fourth Proportional to 750,643.12, 1,123,139.60 and 526,441.20

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Solution

The fourth proportional to 750,643.12, 1,123,139.60 and 526,441.20 is: 787,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,643.12 : 1,123,139.60 = 526,441.20 : x
  2. Step 2: Convert to fraction form
    750,643.12/1,123,139.60 = 526,441.20/x
  3. Step 3: Cross multiply
    750,643.12x = 1,123,139.60 × 526,441.20
  4. Step 4: Simplify right side
    750,643.12x = 591,266,958,791.52
  5. Step 5: Solve for x
    x = 591,266,958,791.52/750,643.12
  6. Step 6: Final answer
    x = 787,680.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.