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Finding the Fourth Proportional to 626,374.13, 864,398.59 and 339,894.20

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Solution

The fourth proportional to 626,374.13, 864,398.59 and 339,894.20 is: 469,055.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,374.13 : 864,398.59 = 339,894.20 : x
  2. Step 2: Convert to fraction form
    626,374.13/864,398.59 = 339,894.20/x
  3. Step 3: Cross multiply
    626,374.13x = 864,398.59 × 339,894.20
  4. Step 4: Simplify right side
    626,374.13x = 293,804,068,540.44
  5. Step 5: Solve for x
    x = 293,804,068,540.44/626,374.13
  6. Step 6: Final answer
    x = 469,055.24

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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.