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Finding the Fourth Proportional to 1,354,896.15, 1,869,961.52 and 774,241.51

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Solution

The fourth proportional to 1,354,896.15, 1,869,961.52 and 774,241.51 is: 1,068,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,896.15 : 1,869,961.52 = 774,241.51 : x
  2. Step 2: Convert to fraction form
    1,354,896.15/1,869,961.52 = 774,241.51/x
  3. Step 3: Cross multiply
    1,354,896.15x = 1,869,961.52 × 774,241.51
  4. Step 4: Simplify right side
    1,354,896.15x = 1,447,801,830,886.70
  5. Step 5: Solve for x
    x = 1,447,801,830,886.70/1,354,896.15
  6. Step 6: Final answer
    x = 1,068,570.33

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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.