Home / 780,682.25-1,077,342.23-422,986.25

Finding the Fourth Proportional to 780,682.25, 1,077,342.23 and 422,986.25

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Solution

The fourth proportional to 780,682.25, 1,077,342.23 and 422,986.25 is: 583,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,682.25 : 1,077,342.23 = 422,986.25 : x
  2. Step 2: Convert to fraction form
    780,682.25/1,077,342.23 = 422,986.25/x
  3. Step 3: Cross multiply
    780,682.25x = 1,077,342.23 × 422,986.25
  4. Step 4: Simplify right side
    780,682.25x = 455,700,947,719.41
  5. Step 5: Solve for x
    x = 455,700,947,719.41/780,682.25
  6. Step 6: Final answer
    x = 583,721.42

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Double scale
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Similar ratio
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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.