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Finding the Fourth Proportional to 1,415,129.60, 1,949,557.44 and 984,669.44

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Solution

The fourth proportional to 1,415,129.60, 1,949,557.44 and 984,669.44 is: 1,356,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415,129.60 : 1,949,557.44 = 984,669.44 : x
  2. Step 2: Convert to fraction form
    1,415,129.60/1,949,557.44 = 984,669.44/x
  3. Step 3: Cross multiply
    1,415,129.60x = 1,949,557.44 × 984,669.44
  4. Step 4: Simplify right side
    1,415,129.60x = 1,919,669,632,692.63
  5. Step 5: Solve for x
    x = 1,919,669,632,692.63/1,415,129.60
  6. Step 6: Final answer
    x = 1,356,532.74

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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.