Home / 819,320.80-1,228,981.20-679,352.80

Finding the Fourth Proportional to 819,320.80, 1,228,981.20 and 679,352.80

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Solution

The fourth proportional to 819,320.80, 1,228,981.20 and 679,352.80 is: 1,019,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,320.80 : 1,228,981.20 = 679,352.80 : x
  2. Step 2: Convert to fraction form
    819,320.80/1,228,981.20 = 679,352.80/x
  3. Step 3: Cross multiply
    819,320.80x = 1,228,981.20 × 679,352.80
  4. Step 4: Simplify right side
    819,320.80x = 834,911,819,367.36
  5. Step 5: Solve for x
    x = 834,911,819,367.36/819,320.80
  6. Step 6: Final answer
    x = 1,019,029.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.