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Finding the Fourth Proportional to 519,498.88, 716,786.64 and 315,544.12

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Solution

The fourth proportional to 519,498.88, 716,786.64 and 315,544.12 is: 435,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,498.88 : 716,786.64 = 315,544.12 : x
  2. Step 2: Convert to fraction form
    519,498.88/716,786.64 = 315,544.12/x
  3. Step 3: Cross multiply
    519,498.88x = 716,786.64 × 315,544.12
  4. Step 4: Simplify right side
    519,498.88x = 226,177,809,546.56
  5. Step 5: Solve for x
    x = 226,177,809,546.56/519,498.88
  6. Step 6: Final answer
    x = 435,376.90

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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.