Home / 1,278,178.26-1,917,529.65-520,017.72

Finding the Fourth Proportional to 1,278,178.26, 1,917,529.65 and 520,017.72

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Solution

The fourth proportional to 1,278,178.26, 1,917,529.65 and 520,017.72 is: 780,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,178.26 : 1,917,529.65 = 520,017.72 : x
  2. Step 2: Convert to fraction form
    1,278,178.26/1,917,529.65 = 520,017.72/x
  3. Step 3: Cross multiply
    1,278,178.26x = 1,917,529.65 × 520,017.72
  4. Step 4: Simplify right side
    1,278,178.26x = 997,149,396,625.40
  5. Step 5: Solve for x
    x = 997,149,396,625.40/1,278,178.26
  6. Step 6: Final answer
    x = 780,133.28

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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.