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Finding the Fourth Proportional to 568,631.20, 852,537.20 and 319,389.60

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Solution

The fourth proportional to 568,631.20, 852,537.20 and 319,389.60 is: 478,854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,631.20 : 852,537.20 = 319,389.60 : x
  2. Step 2: Convert to fraction form
    568,631.20/852,537.20 = 319,389.60/x
  3. Step 3: Cross multiply
    568,631.20x = 852,537.20 × 319,389.60
  4. Step 4: Simplify right side
    568,631.20x = 272,291,515,293.12
  5. Step 5: Solve for x
    x = 272,291,515,293.12/568,631.20
  6. Step 6: Final answer
    x = 478,854.34

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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.