Home / 779,836.80-1,076,164.80-422,140.80

Finding the Fourth Proportional to 779,836.80, 1,076,164.80 and 422,140.80

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Solution

The fourth proportional to 779,836.80, 1,076,164.80 and 422,140.80 is: 582,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,836.80 : 1,076,164.80 = 422,140.80 : x
  2. Step 2: Convert to fraction form
    779,836.80/1,076,164.80 = 422,140.80/x
  3. Step 3: Cross multiply
    779,836.80x = 1,076,164.80 × 422,140.80
  4. Step 4: Simplify right side
    779,836.80x = 454,293,069,603.84
  5. Step 5: Solve for x
    x = 454,293,069,603.84/779,836.80
  6. Step 6: Final answer
    x = 582,548.90

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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.