Home / 919,278.52-1,378,917.76-288,243.16

Finding the Fourth Proportional to 919,278.52, 1,378,917.76 and 288,243.16

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Solution

The fourth proportional to 919,278.52, 1,378,917.76 and 288,243.16 is: 432,364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,278.52 : 1,378,917.76 = 288,243.16 : x
  2. Step 2: Convert to fraction form
    919,278.52/1,378,917.76 = 288,243.16/x
  3. Step 3: Cross multiply
    919,278.52x = 1,378,917.76 × 288,243.16
  4. Step 4: Simplify right side
    919,278.52x = 397,463,612,522.52
  5. Step 5: Solve for x
    x = 397,463,612,522.52/919,278.52
  6. Step 6: Final answer
    x = 432,364.73

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Double scale
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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.