Home / 780,689.07-1,171,034.01-219,723.57

Finding the Fourth Proportional to 780,689.07, 1,171,034.01 and 219,723.57

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Solution

The fourth proportional to 780,689.07, 1,171,034.01 and 219,723.57 is: 329,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,689.07 : 1,171,034.01 = 219,723.57 : x
  2. Step 2: Convert to fraction form
    780,689.07/1,171,034.01 = 219,723.57/x
  3. Step 3: Cross multiply
    780,689.07x = 1,171,034.01 × 219,723.57
  4. Step 4: Simplify right side
    780,689.07x = 257,303,773,268.62
  5. Step 5: Solve for x
    x = 257,303,773,268.62/780,689.07
  6. Step 6: Final answer
    x = 329,585.47

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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.