Home / 498,439.22-687,837.32-283,574.68

Finding the Fourth Proportional to 498,439.22, 687,837.32 and 283,574.68

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Solution

The fourth proportional to 498,439.22, 687,837.32 and 283,574.68 is: 391,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,439.22 : 687,837.32 = 283,574.68 : x
  2. Step 2: Convert to fraction form
    498,439.22/687,837.32 = 283,574.68/x
  3. Step 3: Cross multiply
    498,439.22x = 687,837.32 × 283,574.68
  4. Step 4: Simplify right side
    498,439.22x = 195,053,246,900.40
  5. Step 5: Solve for x
    x = 195,053,246,900.40/498,439.22
  6. Step 6: Final answer
    x = 391,328.05

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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.