Home / 779,829.12-1,076,164.38-422,133.12

Finding the Fourth Proportional to 779,829.12, 1,076,164.38 and 422,133.12

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Solution

The fourth proportional to 779,829.12, 1,076,164.38 and 422,133.12 is: 582,543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,829.12 : 1,076,164.38 = 422,133.12 : x
  2. Step 2: Convert to fraction form
    779,829.12/1,076,164.38 = 422,133.12/x
  3. Step 3: Cross multiply
    779,829.12x = 1,076,164.38 × 422,133.12
  4. Step 4: Simplify right side
    779,829.12x = 454,284,627,362.27
  5. Step 5: Solve for x
    x = 454,284,627,362.27/779,829.12
  6. Step 6: Final answer
    x = 582,543.81

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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.