Home / 919,278.54-1,378,917.78-288,243.18

Finding the Fourth Proportional to 919,278.54, 1,378,917.78 and 288,243.18

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Solution

The fourth proportional to 919,278.54, 1,378,917.78 and 288,243.18 is: 432,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,278.54 : 1,378,917.78 = 288,243.18 : x
  2. Step 2: Convert to fraction form
    919,278.54/1,378,917.78 = 288,243.18/x
  3. Step 3: Cross multiply
    919,278.54x = 1,378,917.78 × 288,243.18
  4. Step 4: Simplify right side
    919,278.54x = 397,463,645,865.74
  5. Step 5: Solve for x
    x = 397,463,645,865.74/919,278.54
  6. Step 6: Final answer
    x = 432,364.76

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1.5x scale

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.