Home / 499,984.91-689,962.15-285,194.51

Finding the Fourth Proportional to 499,984.91, 689,962.15 and 285,194.51

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Solution

The fourth proportional to 499,984.91, 689,962.15 and 285,194.51 is: 393,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,984.91 : 689,962.15 = 285,194.51 : x
  2. Step 2: Convert to fraction form
    499,984.91/689,962.15 = 285,194.51/x
  3. Step 3: Cross multiply
    499,984.91x = 689,962.15 × 285,194.51
  4. Step 4: Simplify right side
    499,984.91x = 196,773,417,287.80
  5. Step 5: Solve for x
    x = 196,773,417,287.80/499,984.91
  6. Step 6: Final answer
    x = 393,558.71

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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.