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Finding the Fourth Proportional to 1,434,503.51, 1,979,614.65 and 789,922.11

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Solution

The fourth proportional to 1,434,503.51, 1,979,614.65 and 789,922.11 is: 1,090,092.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,503.51 : 1,979,614.65 = 789,922.11 : x
  2. Step 2: Convert to fraction form
    1,434,503.51/1,979,614.65 = 789,922.11/x
  3. Step 3: Cross multiply
    1,434,503.51x = 1,979,614.65 × 789,922.11
  4. Step 4: Simplify right side
    1,434,503.51x = 1,563,741,381,314.91
  5. Step 5: Solve for x
    x = 1,563,741,381,314.91/1,434,503.51
  6. Step 6: Final answer
    x = 1,090,092.41

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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.