Home / 780,272.25-1,076,775.71-422,576.25

Finding the Fourth Proportional to 780,272.25, 1,076,775.71 and 422,576.25

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Solution

The fourth proportional to 780,272.25, 1,076,775.71 and 422,576.25 is: 583,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,272.25 : 1,076,775.71 = 422,576.25 : x
  2. Step 2: Convert to fraction form
    780,272.25/1,076,775.71 = 422,576.25/x
  3. Step 3: Cross multiply
    780,272.25x = 1,076,775.71 × 422,576.25
  4. Step 4: Simplify right side
    780,272.25x = 455,019,839,510.01
  5. Step 5: Solve for x
    x = 455,019,839,510.01/780,272.25
  6. Step 6: Final answer
    x = 583,155.23

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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.