Home / 487,826.71-731,740.05-321,575.83

Finding the Fourth Proportional to 487,826.71, 731,740.05 and 321,575.83

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Solution

The fourth proportional to 487,826.71, 731,740.05 and 321,575.83 is: 482,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,826.71 : 731,740.05 = 321,575.83 : x
  2. Step 2: Convert to fraction form
    487,826.71/731,740.05 = 321,575.83/x
  3. Step 3: Cross multiply
    487,826.71x = 731,740.05 × 321,575.83
  4. Step 4: Simplify right side
    487,826.71x = 235,309,913,922.99
  5. Step 5: Solve for x
    x = 235,309,913,922.99/487,826.71
  6. Step 6: Final answer
    x = 482,363.74

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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.