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Finding the Fourth Proportional to 518,276.37, 715,204.08 and 300,489.04

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Solution

The fourth proportional to 518,276.37, 715,204.08 and 300,489.04 is: 414,664.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,276.37 : 715,204.08 = 300,489.04 : x
  2. Step 2: Convert to fraction form
    518,276.37/715,204.08 = 300,489.04/x
  3. Step 3: Cross multiply
    518,276.37x = 715,204.08 × 300,489.04
  4. Step 4: Simplify right side
    518,276.37x = 214,910,988,297.29
  5. Step 5: Solve for x
    x = 214,910,988,297.29/518,276.37
  6. Step 6: Final answer
    x = 414,664.84

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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.