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Finding the Fourth Proportional to 499,651.32, 689,585.52 and 281,904.69

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Solution

The fourth proportional to 499,651.32, 689,585.52 and 281,904.69 is: 389,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,651.32 : 689,585.52 = 281,904.69 : x
  2. Step 2: Convert to fraction form
    499,651.32/689,585.52 = 281,904.69/x
  3. Step 3: Cross multiply
    499,651.32x = 689,585.52 × 281,904.69
  4. Step 4: Simplify right side
    499,651.32x = 194,397,392,244.09
  5. Step 5: Solve for x
    x = 194,397,392,244.09/499,651.32
  6. Step 6: Final answer
    x = 389,066.10

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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.