Home / 819,821.32-1,221,581.84-730,387.60

Finding the Fourth Proportional to 819,821.32, 1,221,581.84 and 730,387.60

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Solution

The fourth proportional to 819,821.32, 1,221,581.84 and 730,387.60 is: 1,088,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,821.32 : 1,221,581.84 = 730,387.60 : x
  2. Step 2: Convert to fraction form
    819,821.32/1,221,581.84 = 730,387.60/x
  3. Step 3: Cross multiply
    819,821.32x = 1,221,581.84 × 730,387.60
  4. Step 4: Simplify right side
    819,821.32x = 892,228,228,321.18
  5. Step 5: Solve for x
    x = 892,228,228,321.18/819,821.32
  6. Step 6: Final answer
    x = 1,088,320.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.