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Finding the Fourth Proportional to 487,231.10, 729,809.85 and 404,287.10

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Solution

The fourth proportional to 487,231.10, 729,809.85 and 404,287.10 is: 605,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,231.10 : 729,809.85 = 404,287.10 : x
  2. Step 2: Convert to fraction form
    487,231.10/729,809.85 = 404,287.10/x
  3. Step 3: Cross multiply
    487,231.10x = 729,809.85 × 404,287.10
  4. Step 4: Simplify right side
    487,231.10x = 295,052,707,807.94
  5. Step 5: Solve for x
    x = 295,052,707,807.94/487,231.10
  6. Step 6: Final answer
    x = 605,570.35

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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.