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Finding the Fourth Proportional to 568,065.20, 783,999.40 and 326,347.32

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Solution

The fourth proportional to 568,065.20, 783,999.40 and 326,347.32 is: 450,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,065.20 : 783,999.40 = 326,347.32 : x
  2. Step 2: Convert to fraction form
    568,065.20/783,999.40 = 326,347.32/x
  3. Step 3: Cross multiply
    568,065.20x = 783,999.40 × 326,347.32
  4. Step 4: Simplify right side
    568,065.20x = 255,856,103,071.61
  5. Step 5: Solve for x
    x = 255,856,103,071.61/568,065.20
  6. Step 6: Final answer
    x = 450,399.18

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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.