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Finding the Fourth Proportional to 524,811.20, 787,605.60 and 209,494.40

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Solution

The fourth proportional to 524,811.20, 787,605.60 and 209,494.40 is: 314,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,811.20 : 787,605.60 = 209,494.40 : x
  2. Step 2: Convert to fraction form
    524,811.20/787,605.60 = 209,494.40/x
  3. Step 3: Cross multiply
    524,811.20x = 787,605.60 × 209,494.40
  4. Step 4: Simplify right side
    524,811.20x = 164,998,962,608.64
  5. Step 5: Solve for x
    x = 164,998,962,608.64/524,811.20
  6. Step 6: Final answer
    x = 314,396.80

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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.