Home / 499,432.42-689,284.20-281,685.79

Finding the Fourth Proportional to 499,432.42, 689,284.20 and 281,685.79

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Solution

The fourth proportional to 499,432.42, 689,284.20 and 281,685.79 is: 388,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,432.42 : 689,284.20 = 281,685.79 : x
  2. Step 2: Convert to fraction form
    499,432.42/689,284.20 = 281,685.79/x
  3. Step 3: Cross multiply
    499,432.42x = 689,284.20 × 281,685.79
  4. Step 4: Simplify right side
    499,432.42x = 194,161,564,411.52
  5. Step 5: Solve for x
    x = 194,161,564,411.52/499,432.42
  6. Step 6: Final answer
    x = 388,764.44

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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.