Home / 771,455.40-1,157,367.87-321,926.22

Finding the Fourth Proportional to 771,455.40, 1,157,367.87 and 321,926.22

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Solution

The fourth proportional to 771,455.40, 1,157,367.87 and 321,926.22 is: 482,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,455.40 : 1,157,367.87 = 321,926.22 : x
  2. Step 2: Convert to fraction form
    771,455.40/1,157,367.87 = 321,926.22/x
  3. Step 3: Cross multiply
    771,455.40x = 1,157,367.87 × 321,926.22
  4. Step 4: Simplify right side
    771,455.40x = 372,587,063,538.55
  5. Step 5: Solve for x
    x = 372,587,063,538.55/771,455.40
  6. Step 6: Final answer
    x = 482,966.43

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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.