Home / 1,211,515.20-1,671,883.20-667,655.28

Finding the Fourth Proportional to 1,211,515.20, 1,671,883.20 and 667,655.28

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Solution

The fourth proportional to 1,211,515.20, 1,671,883.20 and 667,655.28 is: 921,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,515.20 : 1,671,883.20 = 667,655.28 : x
  2. Step 2: Convert to fraction form
    1,211,515.20/1,671,883.20 = 667,655.28/x
  3. Step 3: Cross multiply
    1,211,515.20x = 1,671,883.20 × 667,655.28
  4. Step 4: Simplify right side
    1,211,515.20x = 1,116,241,646,023.30
  5. Step 5: Solve for x
    x = 1,116,241,646,023.30/1,211,515.20
  6. Step 6: Final answer
    x = 921,360.00

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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.