Home / 1,111,218.40-1,665,515.40-471,520.90

Finding the Fourth Proportional to 1,111,218.40, 1,665,515.40 and 471,520.90

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Solution

The fourth proportional to 1,111,218.40, 1,665,515.40 and 471,520.90 is: 706,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,218.40 : 1,665,515.40 = 471,520.90 : x
  2. Step 2: Convert to fraction form
    1,111,218.40/1,665,515.40 = 471,520.90/x
  3. Step 3: Cross multiply
    1,111,218.40x = 1,665,515.40 × 471,520.90
  4. Step 4: Simplify right side
    1,111,218.40x = 785,325,320,371.86
  5. Step 5: Solve for x
    x = 785,325,320,371.86/1,111,218.40
  6. Step 6: Final answer
    x = 706,724.55

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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.