Home / 771,422.90-1,157,317.80-321,893.96

Finding the Fourth Proportional to 771,422.90, 1,157,317.80 and 321,893.96

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Solution

The fourth proportional to 771,422.90, 1,157,317.80 and 321,893.96 is: 482,917.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,422.90 : 1,157,317.80 = 321,893.96 : x
  2. Step 2: Convert to fraction form
    771,422.90/1,157,317.80 = 321,893.96/x
  3. Step 3: Cross multiply
    771,422.90x = 1,157,317.80 × 321,893.96
  4. Step 4: Simplify right side
    771,422.90x = 372,533,609,620.49
  5. Step 5: Solve for x
    x = 372,533,609,620.49/771,422.90
  6. Step 6: Final answer
    x = 482,917.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.