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Finding the Fourth Proportional to 518,924.48, 716,115.36 and 280,460.48

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Solution

The fourth proportional to 518,924.48, 716,115.36 and 280,460.48 is: 387,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,924.48 : 716,115.36 = 280,460.48 : x
  2. Step 2: Convert to fraction form
    518,924.48/716,115.36 = 280,460.48/x
  3. Step 3: Cross multiply
    518,924.48x = 716,115.36 × 280,460.48
  4. Step 4: Simplify right side
    518,924.48x = 200,842,057,600.97
  5. Step 5: Solve for x
    x = 200,842,057,600.97/518,924.48
  6. Step 6: Final answer
    x = 387,035.23

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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.