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Finding the Fourth Proportional to 885,812.10, 1,328,718.15 and 817,383.30

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Solution

The fourth proportional to 885,812.10, 1,328,718.15 and 817,383.30 is: 1,226,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,812.10 : 1,328,718.15 = 817,383.30 : x
  2. Step 2: Convert to fraction form
    885,812.10/1,328,718.15 = 817,383.30/x
  3. Step 3: Cross multiply
    885,812.10x = 1,328,718.15 × 817,383.30
  4. Step 4: Simplify right side
    885,812.10x = 1,086,072,026,216.90
  5. Step 5: Solve for x
    x = 1,086,072,026,216.90/885,812.10
  6. Step 6: Final answer
    x = 1,226,074.95

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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.