Home / 668,503.80-1,003,061.88-289,540.44

Finding the Fourth Proportional to 668,503.80, 1,003,061.88 and 289,540.44

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Solution

The fourth proportional to 668,503.80, 1,003,061.88 and 289,540.44 is: 434,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,503.80 : 1,003,061.88 = 289,540.44 : x
  2. Step 2: Convert to fraction form
    668,503.80/1,003,061.88 = 289,540.44/x
  3. Step 3: Cross multiply
    668,503.80x = 1,003,061.88 × 289,540.44
  4. Step 4: Simplify right side
    668,503.80x = 290,426,978,082.43
  5. Step 5: Solve for x
    x = 290,426,978,082.43/668,503.80
  6. Step 6: Final answer
    x = 434,443.27

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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.