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Finding the Fourth Proportional to 885,812.80, 1,328,719.20 and 822,827.20

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Solution

The fourth proportional to 885,812.80, 1,328,719.20 and 822,827.20 is: 1,234,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,812.80 : 1,328,719.20 = 822,827.20 : x
  2. Step 2: Convert to fraction form
    885,812.80/1,328,719.20 = 822,827.20/x
  3. Step 3: Cross multiply
    885,812.80x = 1,328,719.20 × 822,827.20
  4. Step 4: Simplify right side
    885,812.80x = 1,093,306,298,922.24
  5. Step 5: Solve for x
    x = 1,093,306,298,922.24/885,812.80
  6. Step 6: Final answer
    x = 1,234,240.80

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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.