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Finding the Fourth Proportional to 651,950.80, 978,217.80 and 314,861.20

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Solution

The fourth proportional to 651,950.80, 978,217.80 and 314,861.20 is: 472,432.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,950.80 : 978,217.80 = 314,861.20 : x
  2. Step 2: Convert to fraction form
    651,950.80/978,217.80 = 314,861.20/x
  3. Step 3: Cross multiply
    651,950.80x = 978,217.80 × 314,861.20
  4. Step 4: Simplify right side
    651,950.80x = 308,002,830,369.36
  5. Step 5: Solve for x
    x = 308,002,830,369.36/651,950.80
  6. Step 6: Final answer
    x = 472,432.63

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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.