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Finding the Fourth Proportional to 648,059.80, 970,388.70 and 457,491.10

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Solution

The fourth proportional to 648,059.80, 970,388.70 and 457,491.10 is: 685,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,059.80 : 970,388.70 = 457,491.10 : x
  2. Step 2: Convert to fraction form
    648,059.80/970,388.70 = 457,491.10/x
  3. Step 3: Cross multiply
    648,059.80x = 970,388.70 × 457,491.10
  4. Step 4: Simplify right side
    648,059.80x = 443,944,193,790.57
  5. Step 5: Solve for x
    x = 443,944,193,790.57/648,059.80
  6. Step 6: Final answer
    x = 685,035.85

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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.