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Finding the Fourth Proportional to 587,989.80, 811,608.66 and 467,345.16

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Solution

The fourth proportional to 587,989.80, 811,608.66 and 467,345.16 is: 645,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,989.80 : 811,608.66 = 467,345.16 : x
  2. Step 2: Convert to fraction form
    587,989.80/811,608.66 = 467,345.16/x
  3. Step 3: Cross multiply
    587,989.80x = 811,608.66 × 467,345.16
  4. Step 4: Simplify right side
    587,989.80x = 379,301,379,065.09
  5. Step 5: Solve for x
    x = 379,301,379,065.09/587,989.80
  6. Step 6: Final answer
    x = 645,081.56

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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.