Home / 498,055.50-687,313.39-283,195.56

Finding the Fourth Proportional to 498,055.50, 687,313.39 and 283,195.56

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Solution

The fourth proportional to 498,055.50, 687,313.39 and 283,195.56 is: 390,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,055.50 : 687,313.39 = 283,195.56 : x
  2. Step 2: Convert to fraction form
    498,055.50/687,313.39 = 283,195.56/x
  3. Step 3: Cross multiply
    498,055.50x = 687,313.39 × 283,195.56
  4. Step 4: Simplify right side
    498,055.50x = 194,644,100,376.55
  5. Step 5: Solve for x
    x = 194,644,100,376.55/498,055.50
  6. Step 6: Final answer
    x = 390,808.05

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1.5x scale

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.