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Finding the Fourth Proportional to 576,040.40, 862,894.20 and 326,430.80

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Solution

The fourth proportional to 576,040.40, 862,894.20 and 326,430.80 is: 488,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,040.40 : 862,894.20 = 326,430.80 : x
  2. Step 2: Convert to fraction form
    576,040.40/862,894.20 = 326,430.80/x
  3. Step 3: Cross multiply
    576,040.40x = 862,894.20 × 326,430.80
  4. Step 4: Simplify right side
    576,040.40x = 281,675,244,021.36
  5. Step 5: Solve for x
    x = 281,675,244,021.36/576,040.40
  6. Step 6: Final answer
    x = 488,985.22

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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.