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Finding the Fourth Proportional to 885,825.20, 1,328,737.80 and 862,497.20

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Solution

The fourth proportional to 885,825.20, 1,328,737.80 and 862,497.20 is: 1,293,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,825.20 : 1,328,737.80 = 862,497.20 : x
  2. Step 2: Convert to fraction form
    885,825.20/1,328,737.80 = 862,497.20/x
  3. Step 3: Cross multiply
    885,825.20x = 1,328,737.80 × 862,497.20
  4. Step 4: Simplify right side
    885,825.20x = 1,146,032,632,034.16
  5. Step 5: Solve for x
    x = 1,146,032,632,034.16/885,825.20
  6. Step 6: Final answer
    x = 1,293,745.80

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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.