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Finding the Fourth Proportional to 608,649.22, 839,785.02 and 393,530.44

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Solution

The fourth proportional to 608,649.22, 839,785.02 and 393,530.44 is: 542,974.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,649.22 : 839,785.02 = 393,530.44 : x
  2. Step 2: Convert to fraction form
    608,649.22/839,785.02 = 393,530.44/x
  3. Step 3: Cross multiply
    608,649.22x = 839,785.02 × 393,530.44
  4. Step 4: Simplify right side
    608,649.22x = 330,480,968,426.01
  5. Step 5: Solve for x
    x = 330,480,968,426.01/608,649.22
  6. Step 6: Final answer
    x = 542,974.44

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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.