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Finding the Fourth Proportional to 854,976.81, 1,285,541.45 and 788,324.25

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Solution

The fourth proportional to 854,976.81, 1,285,541.45 and 788,324.25 is: 1,185,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,976.81 : 1,285,541.45 = 788,324.25 : x
  2. Step 2: Convert to fraction form
    854,976.81/1,285,541.45 = 788,324.25/x
  3. Step 3: Cross multiply
    854,976.81x = 1,285,541.45 × 788,324.25
  4. Step 4: Simplify right side
    854,976.81x = 1,013,423,507,684.86
  5. Step 5: Solve for x
    x = 1,013,423,507,684.86/854,976.81
  6. Step 6: Final answer
    x = 1,185,322.80

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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.