Home / 1,121,165.20-1,681,747.80-806,237.20

Finding the Fourth Proportional to 1,121,165.20, 1,681,747.80 and 806,237.20

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Solution

The fourth proportional to 1,121,165.20, 1,681,747.80 and 806,237.20 is: 1,209,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,165.20 : 1,681,747.80 = 806,237.20 : x
  2. Step 2: Convert to fraction form
    1,121,165.20/1,681,747.80 = 806,237.20/x
  3. Step 3: Cross multiply
    1,121,165.20x = 1,681,747.80 × 806,237.20
  4. Step 4: Simplify right side
    1,121,165.20x = 1,355,887,637,378.16
  5. Step 5: Solve for x
    x = 1,355,887,637,378.16/1,121,165.20
  6. Step 6: Final answer
    x = 1,209,355.80

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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.