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Finding the Fourth Proportional to 626,705.38, 864,854.03 and 340,225.39

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Solution

The fourth proportional to 626,705.38, 864,854.03 and 340,225.39 is: 469,511.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,705.38 : 864,854.03 = 340,225.39 : x
  2. Step 2: Convert to fraction form
    626,705.38/864,854.03 = 340,225.39/x
  3. Step 3: Cross multiply
    626,705.38x = 864,854.03 × 340,225.39
  4. Step 4: Simplify right side
    626,705.38x = 294,245,299,649.82
  5. Step 5: Solve for x
    x = 294,245,299,649.82/626,705.38
  6. Step 6: Final answer
    x = 469,511.37

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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.