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Finding the Fourth Proportional to 626,296.10, 864,331.35 and 354,363.98

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Solution

The fourth proportional to 626,296.10, 864,331.35 and 354,363.98 is: 489,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,296.10 : 864,331.35 = 354,363.98 : x
  2. Step 2: Convert to fraction form
    626,296.10/864,331.35 = 354,363.98/x
  3. Step 3: Cross multiply
    626,296.10x = 864,331.35 × 354,363.98
  4. Step 4: Simplify right side
    626,296.10x = 306,287,897,224.77
  5. Step 5: Solve for x
    x = 306,287,897,224.77/626,296.10
  6. Step 6: Final answer
    x = 489,046.47

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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.