Home / 490,004.78-676,088.28-285,939.23

Finding the Fourth Proportional to 490,004.78, 676,088.28 and 285,939.23

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Solution

The fourth proportional to 490,004.78, 676,088.28 and 285,939.23 is: 394,527.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,004.78 : 676,088.28 = 285,939.23 : x
  2. Step 2: Convert to fraction form
    490,004.78/676,088.28 = 285,939.23/x
  3. Step 3: Cross multiply
    490,004.78x = 676,088.28 × 285,939.23
  4. Step 4: Simplify right side
    490,004.78x = 193,320,158,814.78
  5. Step 5: Solve for x
    x = 193,320,158,814.78/490,004.78
  6. Step 6: Final answer
    x = 394,527.09

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1.5x scale

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.