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Finding the Fourth Proportional to 518,367.28, 715,260.06 and 288,874.20

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Solution

The fourth proportional to 518,367.28, 715,260.06 and 288,874.20 is: 398,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,367.28 : 715,260.06 = 288,874.20 : x
  2. Step 2: Convert to fraction form
    518,367.28/715,260.06 = 288,874.20/x
  3. Step 3: Cross multiply
    518,367.28x = 715,260.06 × 288,874.20
  4. Step 4: Simplify right side
    518,367.28x = 206,620,177,624.45
  5. Step 5: Solve for x
    x = 206,620,177,624.45/518,367.28
  6. Step 6: Final answer
    x = 398,598.03

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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.