Home / 1,122,512.80-1,549,122.96-639,087.52

Finding the Fourth Proportional to 1,122,512.80, 1,549,122.96 and 639,087.52

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Solution

The fourth proportional to 1,122,512.80, 1,549,122.96 and 639,087.52 is: 881,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,512.80 : 1,549,122.96 = 639,087.52 : x
  2. Step 2: Convert to fraction form
    1,122,512.80/1,549,122.96 = 639,087.52/x
  3. Step 3: Cross multiply
    1,122,512.80x = 1,549,122.96 × 639,087.52
  4. Step 4: Simplify right side
    1,122,512.80x = 990,025,150,681.46
  5. Step 5: Solve for x
    x = 990,025,150,681.46/1,122,512.80
  6. Step 6: Final answer
    x = 881,972.26

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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.