Home / 642,243.03-959,458.34-415,758.39

Finding the Fourth Proportional to 642,243.03, 959,458.34 and 415,758.39

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Solution

The fourth proportional to 642,243.03, 959,458.34 and 415,758.39 is: 621,108.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,243.03 : 959,458.34 = 415,758.39 : x
  2. Step 2: Convert to fraction form
    642,243.03/959,458.34 = 415,758.39/x
  3. Step 3: Cross multiply
    642,243.03x = 959,458.34 × 415,758.39
  4. Step 4: Simplify right side
    642,243.03x = 398,902,852,631.68
  5. Step 5: Solve for x
    x = 398,902,852,631.68/642,243.03
  6. Step 6: Final answer
    x = 621,108.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.