Home / 498,055.25-687,313.05-283,195.31

Finding the Fourth Proportional to 498,055.25, 687,313.05 and 283,195.31

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Solution

The fourth proportional to 498,055.25, 687,313.05 and 283,195.31 is: 390,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,055.25 : 687,313.05 = 283,195.31 : x
  2. Step 2: Convert to fraction form
    498,055.25/687,313.05 = 283,195.31/x
  3. Step 3: Cross multiply
    498,055.25x = 687,313.05 × 283,195.31
  4. Step 4: Simplify right side
    498,055.25x = 194,643,828,825.23
  5. Step 5: Solve for x
    x = 194,643,828,825.23/498,055.25
  6. Step 6: Final answer
    x = 390,807.71

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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.