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Finding the Fourth Proportional to 666,560.22, 919,830.24 and 380,172.57

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Solution

The fourth proportional to 666,560.22, 919,830.24 and 380,172.57 is: 524,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,560.22 : 919,830.24 = 380,172.57 : x
  2. Step 2: Convert to fraction form
    666,560.22/919,830.24 = 380,172.57/x
  3. Step 3: Cross multiply
    666,560.22x = 919,830.24 × 380,172.57
  4. Step 4: Simplify right side
    666,560.22x = 349,694,226,304.52
  5. Step 5: Solve for x
    x = 349,694,226,304.52/666,560.22
  6. Step 6: Final answer
    x = 524,625.11

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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.