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Finding the Fourth Proportional to 520,106.60, 779,576.70 and 267,289.40

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Solution

The fourth proportional to 520,106.60, 779,576.70 and 267,289.40 is: 400,634.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,106.60 : 779,576.70 = 267,289.40 : x
  2. Step 2: Convert to fraction form
    520,106.60/779,576.70 = 267,289.40/x
  3. Step 3: Cross multiply
    520,106.60x = 779,576.70 × 267,289.40
  4. Step 4: Simplify right side
    520,106.60x = 208,372,588,396.98
  5. Step 5: Solve for x
    x = 208,372,588,396.98/520,106.60
  6. Step 6: Final answer
    x = 400,634.39

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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.