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Finding the Fourth Proportional to 564,197.72, 778,578.78 and 315,836.24

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Solution

The fourth proportional to 564,197.72, 778,578.78 and 315,836.24 is: 435,846.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,197.72 : 778,578.78 = 315,836.24 : x
  2. Step 2: Convert to fraction form
    564,197.72/778,578.78 = 315,836.24/x
  3. Step 3: Cross multiply
    564,197.72x = 778,578.78 × 315,836.24
  4. Step 4: Simplify right side
    564,197.72x = 245,903,394,418.99
  5. Step 5: Solve for x
    x = 245,903,394,418.99/564,197.72
  6. Step 6: Final answer
    x = 435,846.13

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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.