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Finding the Fourth Proportional to 483,439.68, 666,962.64 and 356,418.72

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Solution

The fourth proportional to 483,439.68, 666,962.64 and 356,418.72 is: 491,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,439.68 : 666,962.64 = 356,418.72 : x
  2. Step 2: Convert to fraction form
    483,439.68/666,962.64 = 356,418.72/x
  3. Step 3: Cross multiply
    483,439.68x = 666,962.64 × 356,418.72
  4. Step 4: Simplify right side
    483,439.68x = 237,717,970,436.62
  5. Step 5: Solve for x
    x = 237,717,970,436.62/483,439.68
  6. Step 6: Final answer
    x = 491,722.09

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1.5x scale

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.