Home / 690,707.47-1,036,201.33-217,282.72

Finding the Fourth Proportional to 690,707.47, 1,036,201.33 and 217,282.72

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Solution

The fourth proportional to 690,707.47, 1,036,201.33 and 217,282.72 is: 325,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,707.47 : 1,036,201.33 = 217,282.72 : x
  2. Step 2: Convert to fraction form
    690,707.47/1,036,201.33 = 217,282.72/x
  3. Step 3: Cross multiply
    690,707.47x = 1,036,201.33 × 217,282.72
  4. Step 4: Simplify right side
    690,707.47x = 225,148,641,131.12
  5. Step 5: Solve for x
    x = 225,148,641,131.12/690,707.47
  6. Step 6: Final answer
    x = 325,968.16

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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.