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Finding the Fourth Proportional to 587,807.25, 811,346.38 and 383,888.97

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Solution

The fourth proportional to 587,807.25, 811,346.38 and 383,888.97 is: 529,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,807.25 : 811,346.38 = 383,888.97 : x
  2. Step 2: Convert to fraction form
    587,807.25/811,346.38 = 383,888.97/x
  3. Step 3: Cross multiply
    587,807.25x = 811,346.38 × 383,888.97
  4. Step 4: Simplify right side
    587,807.25x = 311,466,926,131.43
  5. Step 5: Solve for x
    x = 311,466,926,131.43/587,807.25
  6. Step 6: Final answer
    x = 529,879.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.