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Finding the Fourth Proportional to 885,687.90, 1,328,531.85 and 836,699.10

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Solution

The fourth proportional to 885,687.90, 1,328,531.85 and 836,699.10 is: 1,255,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,687.90 : 1,328,531.85 = 836,699.10 : x
  2. Step 2: Convert to fraction form
    885,687.90/1,328,531.85 = 836,699.10/x
  3. Step 3: Cross multiply
    885,687.90x = 1,328,531.85 × 836,699.10
  4. Step 4: Simplify right side
    885,687.90x = 1,111,581,403,216.34
  5. Step 5: Solve for x
    x = 1,111,581,403,216.34/885,687.90
  6. Step 6: Final answer
    x = 1,255,048.65

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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.