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Finding the Fourth Proportional to 525,013.60, 787,909.20 and 347,461.60

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Solution

The fourth proportional to 525,013.60, 787,909.20 and 347,461.60 is: 521,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,013.60 : 787,909.20 = 347,461.60 : x
  2. Step 2: Convert to fraction form
    525,013.60/787,909.20 = 347,461.60/x
  3. Step 3: Cross multiply
    525,013.60x = 787,909.20 × 347,461.60
  4. Step 4: Simplify right side
    525,013.60x = 273,768,191,286.72
  5. Step 5: Solve for x
    x = 273,768,191,286.72/525,013.60
  6. Step 6: Final answer
    x = 521,449.71

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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.