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Finding the Fourth Proportional to 478,930.22, 717,582.37 and 288,991.47

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Solution

The fourth proportional to 478,930.22, 717,582.37 and 288,991.47 is: 432,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,930.22 : 717,582.37 = 288,991.47 : x
  2. Step 2: Convert to fraction form
    478,930.22/717,582.37 = 288,991.47/x
  3. Step 3: Cross multiply
    478,930.22x = 717,582.37 × 288,991.47
  4. Step 4: Simplify right side
    478,930.22x = 207,375,181,622.69
  5. Step 5: Solve for x
    x = 207,375,181,622.69/478,930.22
  6. Step 6: Final answer
    x = 432,996.66

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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.