Home / 1,229,215.20-1,695,713.94-821,417.16

Finding the Fourth Proportional to 1,229,215.20, 1,695,713.94 and 821,417.16

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Solution

The fourth proportional to 1,229,215.20, 1,695,713.94 and 821,417.16 is: 1,133,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,215.20 : 1,695,713.94 = 821,417.16 : x
  2. Step 2: Convert to fraction form
    1,229,215.20/1,695,713.94 = 821,417.16/x
  3. Step 3: Cross multiply
    1,229,215.20x = 1,695,713.94 × 821,417.16
  4. Step 4: Simplify right side
    1,229,215.20x = 1,392,888,528,767.21
  5. Step 5: Solve for x
    x = 1,392,888,528,767.21/1,229,215.20
  6. Step 6: Final answer
    x = 1,133,152.70

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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.