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Finding the Fourth Proportional to 577,404.40, 866,236.20 and 340,625.20

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Solution

The fourth proportional to 577,404.40, 866,236.20 and 340,625.20 is: 511,014.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,404.40 : 866,236.20 = 340,625.20 : x
  2. Step 2: Convert to fraction form
    577,404.40/866,236.20 = 340,625.20/x
  3. Step 3: Cross multiply
    577,404.40x = 866,236.20 × 340,625.20
  4. Step 4: Simplify right side
    577,404.40x = 295,061,878,872.24
  5. Step 5: Solve for x
    x = 295,061,878,872.24/577,404.40
  6. Step 6: Final answer
    x = 511,014.25

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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.