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Finding the Fourth Proportional to 628,109.60, 941,872.80 and 272,940.80

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Solution

The fourth proportional to 628,109.60, 941,872.80 and 272,940.80 is: 409,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,109.60 : 941,872.80 = 272,940.80 : x
  2. Step 2: Convert to fraction form
    628,109.60/941,872.80 = 272,940.80/x
  3. Step 3: Cross multiply
    628,109.60x = 941,872.80 × 272,940.80
  4. Step 4: Simplify right side
    628,109.60x = 257,075,515,530.24
  5. Step 5: Solve for x
    x = 257,075,515,530.24/628,109.60
  6. Step 6: Final answer
    x = 409,284.49

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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.