Home / 820,224.20-1,230,336.30-745,428.80

Finding the Fourth Proportional to 820,224.20, 1,230,336.30 and 745,428.80

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Solution

The fourth proportional to 820,224.20, 1,230,336.30 and 745,428.80 is: 1,118,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,224.20 : 1,230,336.30 = 745,428.80 : x
  2. Step 2: Convert to fraction form
    820,224.20/1,230,336.30 = 745,428.80/x
  3. Step 3: Cross multiply
    820,224.20x = 1,230,336.30 × 745,428.80
  4. Step 4: Simplify right side
    820,224.20x = 917,128,111,705.44
  5. Step 5: Solve for x
    x = 917,128,111,705.44/820,224.20
  6. Step 6: Final answer
    x = 1,118,143.20

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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.