Home / 638,628.57-881,275.10-362,979.20

Finding the Fourth Proportional to 638,628.57, 881,275.10 and 362,979.20

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Solution

The fourth proportional to 638,628.57, 881,275.10 and 362,979.20 is: 500,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,628.57 : 881,275.10 = 362,979.20 : x
  2. Step 2: Convert to fraction form
    638,628.57/881,275.10 = 362,979.20/x
  3. Step 3: Cross multiply
    638,628.57x = 881,275.10 × 362,979.20
  4. Step 4: Simplify right side
    638,628.57x = 319,884,524,556.65
  5. Step 5: Solve for x
    x = 319,884,524,556.65/638,628.57
  6. Step 6: Final answer
    x = 500,892.92

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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.