Home / 813,960.40-1,220,940.60-723,758.80

Finding the Fourth Proportional to 813,960.40, 1,220,940.60 and 723,758.80

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Solution

The fourth proportional to 813,960.40, 1,220,940.60 and 723,758.80 is: 1,085,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,960.40 : 1,220,940.60 = 723,758.80 : x
  2. Step 2: Convert to fraction form
    813,960.40/1,220,940.60 = 723,758.80/x
  3. Step 3: Cross multiply
    813,960.40x = 1,220,940.60 × 723,758.80
  4. Step 4: Simplify right side
    813,960.40x = 883,666,503,527.28
  5. Step 5: Solve for x
    x = 883,666,503,527.28/813,960.40
  6. Step 6: Final answer
    x = 1,085,638.20

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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.