Home / 771,448.95-1,157,358.21-321,919.77

Finding the Fourth Proportional to 771,448.95, 1,157,358.21 and 321,919.77

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Solution

The fourth proportional to 771,448.95, 1,157,358.21 and 321,919.77 is: 482,956.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,448.95 : 1,157,358.21 = 321,919.77 : x
  2. Step 2: Convert to fraction form
    771,448.95/1,157,358.21 = 321,919.77/x
  3. Step 3: Cross multiply
    771,448.95x = 1,157,358.21 × 321,919.77
  4. Step 4: Simplify right side
    771,448.95x = 372,576,488,770.81
  5. Step 5: Solve for x
    x = 372,576,488,770.81/771,448.95
  6. Step 6: Final answer
    x = 482,956.76

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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.