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Finding the Fourth Proportional to 559,964.28, 839,414.28 and 356,990.64

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Solution

The fourth proportional to 559,964.28, 839,414.28 and 356,990.64 is: 535,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,964.28 : 839,414.28 = 356,990.64 : x
  2. Step 2: Convert to fraction form
    559,964.28/839,414.28 = 356,990.64/x
  3. Step 3: Cross multiply
    559,964.28x = 839,414.28 × 356,990.64
  4. Step 4: Simplify right side
    559,964.28x = 299,663,041,042.34
  5. Step 5: Solve for x
    x = 299,663,041,042.34/559,964.28
  6. Step 6: Final answer
    x = 535,146.71

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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.