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Finding the Fourth Proportional to 577,400.40, 866,230.20 and 340,621.20

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Solution

The fourth proportional to 577,400.40, 866,230.20 and 340,621.20 is: 511,008.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,400.40 : 866,230.20 = 340,621.20 : x
  2. Step 2: Convert to fraction form
    577,400.40/866,230.20 = 340,621.20/x
  3. Step 3: Cross multiply
    577,400.40x = 866,230.20 × 340,621.20
  4. Step 4: Simplify right side
    577,400.40x = 295,056,370,200.24
  5. Step 5: Solve for x
    x = 295,056,370,200.24/577,400.40
  6. Step 6: Final answer
    x = 511,008.25

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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.