Home / 673,318.80-1,009,976.88-392,639.20

Finding the Fourth Proportional to 673,318.80, 1,009,976.88 and 392,639.20

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Solution

The fourth proportional to 673,318.80, 1,009,976.88 and 392,639.20 is: 588,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,318.80 : 1,009,976.88 = 392,639.20 : x
  2. Step 2: Convert to fraction form
    673,318.80/1,009,976.88 = 392,639.20/x
  3. Step 3: Cross multiply
    673,318.80x = 1,009,976.88 × 392,639.20
  4. Step 4: Simplify right side
    673,318.80x = 396,556,514,181.70
  5. Step 5: Solve for x
    x = 396,556,514,181.70/673,318.80
  6. Step 6: Final answer
    x = 588,958.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.