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Finding the Fourth Proportional to 576,339.20, 863,990.40 and 365,868.80

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Solution

The fourth proportional to 576,339.20, 863,990.40 and 365,868.80 is: 548,474.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,339.20 : 863,990.40 = 365,868.80 : x
  2. Step 2: Convert to fraction form
    576,339.20/863,990.40 = 365,868.80/x
  3. Step 3: Cross multiply
    576,339.20x = 863,990.40 × 365,868.80
  4. Step 4: Simplify right side
    576,339.20x = 316,107,130,859.52
  5. Step 5: Solve for x
    x = 316,107,130,859.52/576,339.20
  6. Step 6: Final answer
    x = 548,474.11

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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.