Home / 1,240,215.24-1,710,321.30-810,863.40

Finding the Fourth Proportional to 1,240,215.24, 1,710,321.30 and 810,863.40

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Solution

The fourth proportional to 1,240,215.24, 1,710,321.30 and 810,863.40 is: 1,118,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,215.24 : 1,710,321.30 = 810,863.40 : x
  2. Step 2: Convert to fraction form
    1,240,215.24/1,710,321.30 = 810,863.40/x
  3. Step 3: Cross multiply
    1,240,215.24x = 1,710,321.30 × 810,863.40
  4. Step 4: Simplify right side
    1,240,215.24x = 1,386,836,944,410.42
  5. Step 5: Solve for x
    x = 1,386,836,944,410.42/1,240,215.24
  6. Step 6: Final answer
    x = 1,118,222.79

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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.