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Finding the Fourth Proportional to 658,704.90, 909,012.96 and 356,898.90

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Solution

The fourth proportional to 658,704.90, 909,012.96 and 356,898.90 is: 492,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,704.90 : 909,012.96 = 356,898.90 : x
  2. Step 2: Convert to fraction form
    658,704.90/909,012.96 = 356,898.90/x
  3. Step 3: Cross multiply
    658,704.90x = 909,012.96 × 356,898.90
  4. Step 4: Simplify right side
    658,704.90x = 324,425,725,509.74
  5. Step 5: Solve for x
    x = 324,425,725,509.74/658,704.90
  6. Step 6: Final answer
    x = 492,520.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.