Home / 1,278,964.80-1,919,138.40-569,102.40

Finding the Fourth Proportional to 1,278,964.80, 1,919,138.40 and 569,102.40

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Solution

The fourth proportional to 1,278,964.80, 1,919,138.40 and 569,102.40 is: 853,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,964.80 : 1,919,138.40 = 569,102.40 : x
  2. Step 2: Convert to fraction form
    1,278,964.80/1,919,138.40 = 569,102.40/x
  3. Step 3: Cross multiply
    1,278,964.80x = 1,919,138.40 × 569,102.40
  4. Step 4: Simplify right side
    1,278,964.80x = 1,092,186,269,372.16
  5. Step 5: Solve for x
    x = 1,092,186,269,372.16/1,278,964.80
  6. Step 6: Final answer
    x = 853,961.16

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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.