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Finding the Fourth Proportional to 519,162.72, 716,768.88 and 398,071.26

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Solution

The fourth proportional to 519,162.72, 716,768.88 and 398,071.26 is: 549,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,162.72 : 716,768.88 = 398,071.26 : x
  2. Step 2: Convert to fraction form
    519,162.72/716,768.88 = 398,071.26/x
  3. Step 3: Cross multiply
    519,162.72x = 716,768.88 × 398,071.26
  4. Step 4: Simplify right side
    519,162.72x = 285,325,091,190.39
  5. Step 5: Solve for x
    x = 285,325,091,190.39/519,162.72
  6. Step 6: Final answer
    x = 549,587.02

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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.