Home / 805,974.80-1,208,962.20-770,545.40

Finding the Fourth Proportional to 805,974.80, 1,208,962.20 and 770,545.40

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Solution

The fourth proportional to 805,974.80, 1,208,962.20 and 770,545.40 is: 1,155,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,974.80 : 1,208,962.20 = 770,545.40 : x
  2. Step 2: Convert to fraction form
    805,974.80/1,208,962.20 = 770,545.40/x
  3. Step 3: Cross multiply
    805,974.80x = 1,208,962.20 × 770,545.40
  4. Step 4: Simplify right side
    805,974.80x = 931,560,261,983.88
  5. Step 5: Solve for x
    x = 931,560,261,983.88/805,974.80
  6. Step 6: Final answer
    x = 1,155,818.10

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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.