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Finding the Fourth Proportional to 519,252.20, 778,903.90 and 270,420.20

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Solution

The fourth proportional to 519,252.20, 778,903.90 and 270,420.20 is: 405,643.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,252.20 : 778,903.90 = 270,420.20 : x
  2. Step 2: Convert to fraction form
    519,252.20/778,903.90 = 270,420.20/x
  3. Step 3: Cross multiply
    519,252.20x = 778,903.90 × 270,420.20
  4. Step 4: Simplify right side
    519,252.20x = 210,631,348,418.78
  5. Step 5: Solve for x
    x = 210,631,348,418.78/519,252.20
  6. Step 6: Final answer
    x = 405,643.63

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Similar ratio
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1.5x scale

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.