Home / 1,287,171.48-1,931,069.37-388,559.52

Finding the Fourth Proportional to 1,287,171.48, 1,931,069.37 and 388,559.52

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Solution

The fourth proportional to 1,287,171.48, 1,931,069.37 and 388,559.52 is: 582,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,171.48 : 1,931,069.37 = 388,559.52 : x
  2. Step 2: Convert to fraction form
    1,287,171.48/1,931,069.37 = 388,559.52/x
  3. Step 3: Cross multiply
    1,287,171.48x = 1,931,069.37 × 388,559.52
  4. Step 4: Simplify right side
    1,287,171.48x = 750,335,387,493.90
  5. Step 5: Solve for x
    x = 750,335,387,493.90/1,287,171.48
  6. Step 6: Final answer
    x = 582,933.51

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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.