Home / 499,244.72-689,318.52-308,519.60

Finding the Fourth Proportional to 499,244.72, 689,318.52 and 308,519.60

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Solution

The fourth proportional to 499,244.72, 689,318.52 and 308,519.60 is: 425,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,244.72 : 689,318.52 = 308,519.60 : x
  2. Step 2: Convert to fraction form
    499,244.72/689,318.52 = 308,519.60/x
  3. Step 3: Cross multiply
    499,244.72x = 689,318.52 × 308,519.60
  4. Step 4: Simplify right side
    499,244.72x = 212,668,274,062.99
  5. Step 5: Solve for x
    x = 212,668,274,062.99/499,244.72
  6. Step 6: Final answer
    x = 425,980.02

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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.