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Finding the Fourth Proportional to 885,830.70, 1,325,246.85 and 768,801.90

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Solution

The fourth proportional to 885,830.70, 1,325,246.85 and 768,801.90 is: 1,150,165.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,830.70 : 1,325,246.85 = 768,801.90 : x
  2. Step 2: Convert to fraction form
    885,830.70/1,325,246.85 = 768,801.90/x
  3. Step 3: Cross multiply
    885,830.70x = 1,325,246.85 × 768,801.90
  4. Step 4: Simplify right side
    885,830.70x = 1,018,852,296,249.02
  5. Step 5: Solve for x
    x = 1,018,852,296,249.02/885,830.70
  6. Step 6: Final answer
    x = 1,150,165.94

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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.