Home / 626,910.48-865,146.78-354,971.21

Finding the Fourth Proportional to 626,910.48, 865,146.78 and 354,971.21

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Solution

The fourth proportional to 626,910.48, 865,146.78 and 354,971.21 is: 489,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,910.48 : 865,146.78 = 354,971.21 : x
  2. Step 2: Convert to fraction form
    626,910.48/865,146.78 = 354,971.21/x
  3. Step 3: Cross multiply
    626,910.48x = 865,146.78 × 354,971.21
  4. Step 4: Simplify right side
    626,910.48x = 307,102,194,998.47
  5. Step 5: Solve for x
    x = 307,102,194,998.47/626,910.48
  6. Step 6: Final answer
    x = 489,866.10

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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.