Home / 819,821.30-1,221,582.16-730,387.58

Finding the Fourth Proportional to 819,821.30, 1,221,582.16 and 730,387.58

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Solution

The fourth proportional to 819,821.30, 1,221,582.16 and 730,387.58 is: 1,088,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,821.30 : 1,221,582.16 = 730,387.58 : x
  2. Step 2: Convert to fraction form
    819,821.30/1,221,582.16 = 730,387.58/x
  3. Step 3: Cross multiply
    819,821.30x = 1,221,582.16 × 730,387.58
  4. Step 4: Simplify right side
    819,821.30x = 892,228,437,613.57
  5. Step 5: Solve for x
    x = 892,228,437,613.57/819,821.30
  6. Step 6: Final answer
    x = 1,088,320.63

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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.