Home / 813,895.80-1,220,843.70-680,926.20

Finding the Fourth Proportional to 813,895.80, 1,220,843.70 and 680,926.20

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Solution

The fourth proportional to 813,895.80, 1,220,843.70 and 680,926.20 is: 1,021,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,895.80 : 1,220,843.70 = 680,926.20 : x
  2. Step 2: Convert to fraction form
    813,895.80/1,220,843.70 = 680,926.20/x
  3. Step 3: Cross multiply
    813,895.80x = 1,220,843.70 × 680,926.20
  4. Step 4: Simplify right side
    813,895.80x = 831,304,461,434.94
  5. Step 5: Solve for x
    x = 831,304,461,434.94/813,895.80
  6. Step 6: Final answer
    x = 1,021,389.30

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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.