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Finding the Fourth Proportional to 653,761.26, 902,263.59 and 395,780.36

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Solution

The fourth proportional to 653,761.26, 902,263.59 and 395,780.36 is: 546,221.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,761.26 : 902,263.59 = 395,780.36 : x
  2. Step 2: Convert to fraction form
    653,761.26/902,263.59 = 395,780.36/x
  3. Step 3: Cross multiply
    653,761.26x = 902,263.59 × 395,780.36
  4. Step 4: Simplify right side
    653,761.26x = 357,098,203,953.77
  5. Step 5: Solve for x
    x = 357,098,203,953.77/653,761.26
  6. Step 6: Final answer
    x = 546,221.11

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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.