Home / 499,720.68-689,614.65-281,975.58

Finding the Fourth Proportional to 499,720.68, 689,614.65 and 281,975.58

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Solution

The fourth proportional to 499,720.68, 689,614.65 and 281,975.58 is: 389,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,720.68 : 689,614.65 = 281,975.58 : x
  2. Step 2: Convert to fraction form
    499,720.68/689,614.65 = 281,975.58/x
  3. Step 3: Cross multiply
    499,720.68x = 689,614.65 × 281,975.58
  4. Step 4: Simplify right side
    499,720.68x = 194,454,490,910.25
  5. Step 5: Solve for x
    x = 194,454,490,910.25/499,720.68
  6. Step 6: Final answer
    x = 389,126.36

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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.