Home / 1,278,979.80-1,919,160.90-569,117.40

Finding the Fourth Proportional to 1,278,979.80, 1,919,160.90 and 569,117.40

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Solution

The fourth proportional to 1,278,979.80, 1,919,160.90 and 569,117.40 is: 853,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,979.80 : 1,919,160.90 = 569,117.40 : x
  2. Step 2: Convert to fraction form
    1,278,979.80/1,919,160.90 = 569,117.40/x
  3. Step 3: Cross multiply
    1,278,979.80x = 1,919,160.90 × 569,117.40
  4. Step 4: Simplify right side
    1,278,979.80x = 1,092,227,861,589.66
  5. Step 5: Solve for x
    x = 1,092,227,861,589.66/1,278,979.80
  6. Step 6: Final answer
    x = 853,983.67

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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.