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Finding the Fourth Proportional to 1,424,392.60, 1,964,926.20 and 965,350.19

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Solution

The fourth proportional to 1,424,392.60, 1,964,926.20 and 965,350.19 is: 1,331,684.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,392.60 : 1,964,926.20 = 965,350.19 : x
  2. Step 2: Convert to fraction form
    1,424,392.60/1,964,926.20 = 965,350.19/x
  3. Step 3: Cross multiply
    1,424,392.60x = 1,964,926.20 × 965,350.19
  4. Step 4: Simplify right side
    1,424,392.60x = 1,896,841,880,505.98
  5. Step 5: Solve for x
    x = 1,896,841,880,505.98/1,424,392.60
  6. Step 6: Final answer
    x = 1,331,684.73

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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.