Home / 776,416.88-1,071,478.94-422,820.95

Finding the Fourth Proportional to 776,416.88, 1,071,478.94 and 422,820.95

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Solution

The fourth proportional to 776,416.88, 1,071,478.94 and 422,820.95 is: 583,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,416.88 : 1,071,478.94 = 422,820.95 : x
  2. Step 2: Convert to fraction form
    776,416.88/1,071,478.94 = 422,820.95/x
  3. Step 3: Cross multiply
    776,416.88x = 1,071,478.94 × 422,820.95
  4. Step 4: Simplify right side
    776,416.88x = 453,043,735,844.29
  5. Step 5: Solve for x
    x = 453,043,735,844.29/776,416.88
  6. Step 6: Final answer
    x = 583,505.78

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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.