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Finding the Fourth Proportional to 476,837.70, 715,256.55 and 399,855.30

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Solution

The fourth proportional to 476,837.70, 715,256.55 and 399,855.30 is: 599,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,837.70 : 715,256.55 = 399,855.30 : x
  2. Step 2: Convert to fraction form
    476,837.70/715,256.55 = 399,855.30/x
  3. Step 3: Cross multiply
    476,837.70x = 715,256.55 × 399,855.30
  4. Step 4: Simplify right side
    476,837.70x = 285,999,122,377.22
  5. Step 5: Solve for x
    x = 285,999,122,377.22/476,837.70
  6. Step 6: Final answer
    x = 599,782.95

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Similar ratio
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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.