Home / 479,847.40-662,631.78-321,332.20

Finding the Fourth Proportional to 479,847.40, 662,631.78 and 321,332.20

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Solution

The fourth proportional to 479,847.40, 662,631.78 and 321,332.20 is: 443,734.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,847.40 : 662,631.78 = 321,332.20 : x
  2. Step 2: Convert to fraction form
    479,847.40/662,631.78 = 321,332.20/x
  3. Step 3: Cross multiply
    479,847.40x = 662,631.78 × 321,332.20
  4. Step 4: Simplify right side
    479,847.40x = 212,924,927,657.32
  5. Step 5: Solve for x
    x = 212,924,927,657.32/479,847.40
  6. Step 6: Final answer
    x = 443,734.67

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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.