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Finding the Fourth Proportional to 479,053.40, 718,616.52 and 279,393.64

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Solution

The fourth proportional to 479,053.40, 718,616.52 and 279,393.64 is: 419,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,053.40 : 718,616.52 = 279,393.64 : x
  2. Step 2: Convert to fraction form
    479,053.40/718,616.52 = 279,393.64/x
  3. Step 3: Cross multiply
    479,053.40x = 718,616.52 × 279,393.64
  4. Step 4: Simplify right side
    479,053.40x = 200,776,885,286.93
  5. Step 5: Solve for x
    x = 200,776,885,286.93/479,053.40
  6. Step 6: Final answer
    x = 419,111.70

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1.5x scale

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.