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Finding the Fourth Proportional to 1,424,451.02, 1,965,737.16 and 812,602.73

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Solution

The fourth proportional to 1,424,451.02, 1,965,737.16 and 812,602.73 is: 1,121,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,451.02 : 1,965,737.16 = 812,602.73 : x
  2. Step 2: Convert to fraction form
    1,424,451.02/1,965,737.16 = 812,602.73/x
  3. Step 3: Cross multiply
    1,424,451.02x = 1,965,737.16 × 812,602.73
  4. Step 4: Simplify right side
    1,424,451.02x = 1,597,363,387,592.79
  5. Step 5: Solve for x
    x = 1,597,363,387,592.79/1,424,451.02
  6. Step 6: Final answer
    x = 1,121,388.78

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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.