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Finding the Fourth Proportional to 653,714.48, 901,866.57 and 378,021.39

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Solution

The fourth proportional to 653,714.48, 901,866.57 and 378,021.39 is: 521,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,714.48 : 901,866.57 = 378,021.39 : x
  2. Step 2: Convert to fraction form
    653,714.48/901,866.57 = 378,021.39/x
  3. Step 3: Cross multiply
    653,714.48x = 901,866.57 × 378,021.39
  4. Step 4: Simplify right side
    653,714.48x = 340,924,854,385.93
  5. Step 5: Solve for x
    x = 340,924,854,385.93/653,714.48
  6. Step 6: Final answer
    x = 521,519.51

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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.