Home / 1,278,178.76-1,917,530.40-520,018.22

Finding the Fourth Proportional to 1,278,178.76, 1,917,530.40 and 520,018.22

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Solution

The fourth proportional to 1,278,178.76, 1,917,530.40 and 520,018.22 is: 780,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,178.76 : 1,917,530.40 = 520,018.22 : x
  2. Step 2: Convert to fraction form
    1,278,178.76/1,917,530.40 = 520,018.22/x
  3. Step 3: Cross multiply
    1,278,178.76x = 1,917,530.40 × 520,018.22
  4. Step 4: Simplify right side
    1,278,178.76x = 997,150,745,403.89
  5. Step 5: Solve for x
    x = 997,150,745,403.89/1,278,178.76
  6. Step 6: Final answer
    x = 780,134.03

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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.