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Finding the Fourth Proportional to 563,280.50, 777,327.09 and 308,640.80

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Solution

The fourth proportional to 563,280.50, 777,327.09 and 308,640.80 is: 425,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,280.50 : 777,327.09 = 308,640.80 : x
  2. Step 2: Convert to fraction form
    563,280.50/777,327.09 = 308,640.80/x
  3. Step 3: Cross multiply
    563,280.50x = 777,327.09 × 308,640.80
  4. Step 4: Simplify right side
    563,280.50x = 239,914,854,919.27
  5. Step 5: Solve for x
    x = 239,914,854,919.27/563,280.50
  6. Step 6: Final answer
    x = 425,924.30

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1.5x scale

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.