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Finding the Fourth Proportional to 493,430.40, 740,145.60 and 488,764.80

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Solution

The fourth proportional to 493,430.40, 740,145.60 and 488,764.80 is: 733,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,430.40 : 740,145.60 = 488,764.80 : x
  2. Step 2: Convert to fraction form
    493,430.40/740,145.60 = 488,764.80/x
  3. Step 3: Cross multiply
    493,430.40x = 740,145.60 × 488,764.80
  4. Step 4: Simplify right side
    493,430.40x = 361,757,116,154.88
  5. Step 5: Solve for x
    x = 361,757,116,154.88/493,430.40
  6. Step 6: Final answer
    x = 733,147.20

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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.