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Finding the Fourth Proportional to 426,964.77, 640,552.23 and 300,851.28

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Solution

The fourth proportional to 426,964.77, 640,552.23 and 300,851.28 is: 451,350.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,964.77 : 640,552.23 = 300,851.28 : x
  2. Step 2: Convert to fraction form
    426,964.77/640,552.23 = 300,851.28/x
  3. Step 3: Cross multiply
    426,964.77x = 640,552.23 × 300,851.28
  4. Step 4: Simplify right side
    426,964.77x = 192,710,958,302.35
  5. Step 5: Solve for x
    x = 192,710,958,302.35/426,964.77
  6. Step 6: Final answer
    x = 451,350.96

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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.