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Finding the Fourth Proportional to 499,117.44, 687,614.40 and 347,944.32

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Solution

The fourth proportional to 499,117.44, 687,614.40 and 347,944.32 is: 479,349.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,117.44 : 687,614.40 = 347,944.32 : x
  2. Step 2: Convert to fraction form
    499,117.44/687,614.40 = 347,944.32/x
  3. Step 3: Cross multiply
    499,117.44x = 687,614.40 × 347,944.32
  4. Step 4: Simplify right side
    499,117.44x = 239,251,524,830.21
  5. Step 5: Solve for x
    x = 239,251,524,830.21/499,117.44
  6. Step 6: Final answer
    x = 479,349.16

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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.