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Finding the Fourth Proportional to 481,726.80, 722,590.20 and 303,656.40

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Solution

The fourth proportional to 481,726.80, 722,590.20 and 303,656.40 is: 455,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,726.80 : 722,590.20 = 303,656.40 : x
  2. Step 2: Convert to fraction form
    481,726.80/722,590.20 = 303,656.40/x
  3. Step 3: Cross multiply
    481,726.80x = 722,590.20 × 303,656.40
  4. Step 4: Simplify right side
    481,726.80x = 219,419,138,807.28
  5. Step 5: Solve for x
    x = 219,419,138,807.28/481,726.80
  6. Step 6: Final answer
    x = 455,484.60

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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.