Home / 1,391,817.27-1,920,025.30-1,207,797.56

Finding the Fourth Proportional to 1,391,817.27, 1,920,025.30 and 1,207,797.56

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Solution

The fourth proportional to 1,391,817.27, 1,920,025.30 and 1,207,797.56 is: 1,666,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,817.27 : 1,920,025.30 = 1,207,797.56 : x
  2. Step 2: Convert to fraction form
    1,391,817.27/1,920,025.30 = 1,207,797.56/x
  3. Step 3: Cross multiply
    1,391,817.27x = 1,920,025.30 × 1,207,797.56
  4. Step 4: Simplify right side
    1,391,817.27x = 2,319,001,872,478.27
  5. Step 5: Solve for x
    x = 2,319,001,872,478.27/1,391,817.27
  6. Step 6: Final answer
    x = 1,666,168.34

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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.