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Finding the Fourth Proportional to 842,692.68, 1,264,034.16 and 281,722.32

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Solution

The fourth proportional to 842,692.68, 1,264,034.16 and 281,722.32 is: 422,581.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,692.68 : 1,264,034.16 = 281,722.32 : x
  2. Step 2: Convert to fraction form
    842,692.68/1,264,034.16 = 281,722.32/x
  3. Step 3: Cross multiply
    842,692.68x = 1,264,034.16 × 281,722.32
  4. Step 4: Simplify right side
    842,692.68x = 356,106,636,114.45
  5. Step 5: Solve for x
    x = 356,106,636,114.45/842,692.68
  6. Step 6: Final answer
    x = 422,581.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.