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Finding the Fourth Proportional to 520,277.22, 780,411.78 and 267,628.50

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Solution

The fourth proportional to 520,277.22, 780,411.78 and 267,628.50 is: 401,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,277.22 : 780,411.78 = 267,628.50 : x
  2. Step 2: Convert to fraction form
    520,277.22/780,411.78 = 267,628.50/x
  3. Step 3: Cross multiply
    520,277.22x = 780,411.78 × 267,628.50
  4. Step 4: Simplify right side
    520,277.22x = 208,860,434,063.73
  5. Step 5: Solve for x
    x = 208,860,434,063.73/520,277.22
  6. Step 6: Final answer
    x = 401,440.67

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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.