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Finding the Fourth Proportional to 551,807.64, 761,493.78 and 322,522.56

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Solution

The fourth proportional to 551,807.64, 761,493.78 and 322,522.56 is: 445,080.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,807.64 : 761,493.78 = 322,522.56 : x
  2. Step 2: Convert to fraction form
    551,807.64/761,493.78 = 322,522.56/x
  3. Step 3: Cross multiply
    551,807.64x = 761,493.78 × 322,522.56
  4. Step 4: Simplify right side
    551,807.64x = 245,598,923,349.68
  5. Step 5: Solve for x
    x = 245,598,923,349.68/551,807.64
  6. Step 6: Final answer
    x = 445,080.69

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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.