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Finding the Fourth Proportional to 648,578.80, 972,871.44 and 293,176.72

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Solution

The fourth proportional to 648,578.80, 972,871.44 and 293,176.72 is: 439,766.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,578.80 : 972,871.44 = 293,176.72 : x
  2. Step 2: Convert to fraction form
    648,578.80/972,871.44 = 293,176.72/x
  3. Step 3: Cross multiply
    648,578.80x = 972,871.44 × 293,176.72
  4. Step 4: Simplify right side
    648,578.80x = 285,223,257,760.88
  5. Step 5: Solve for x
    x = 285,223,257,760.88/648,578.80
  6. Step 6: Final answer
    x = 439,766.54

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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.