Home / 499,720.94-689,615.02-281,975.83

Finding the Fourth Proportional to 499,720.94, 689,615.02 and 281,975.83

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Solution

The fourth proportional to 499,720.94, 689,615.02 and 281,975.83 is: 389,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,720.94 : 689,615.02 = 281,975.83 : x
  2. Step 2: Convert to fraction form
    499,720.94/689,615.02 = 281,975.83/x
  3. Step 3: Cross multiply
    499,720.94x = 689,615.02 × 281,975.83
  4. Step 4: Simplify right side
    499,720.94x = 194,454,768,566.37
  5. Step 5: Solve for x
    x = 194,454,768,566.37/499,720.94
  6. Step 6: Final answer
    x = 389,126.71

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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.