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Finding the Fourth Proportional to 1,354,899.11, 1,869,965.57 and 774,244.44

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Solution

The fourth proportional to 1,354,899.11, 1,869,965.57 and 774,244.44 is: 1,068,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,899.11 : 1,869,965.57 = 774,244.44 : x
  2. Step 2: Convert to fraction form
    1,354,899.11/1,869,965.57 = 774,244.44/x
  3. Step 3: Cross multiply
    1,354,899.11x = 1,869,965.57 × 774,244.44
  4. Step 4: Simplify right side
    1,354,899.11x = 1,447,810,447,499.54
  5. Step 5: Solve for x
    x = 1,447,810,447,499.54/1,354,899.11
  6. Step 6: Final answer
    x = 1,068,574.36

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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.