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Finding the Fourth Proportional to 626,508.96, 864,560.43 and 340,023.30

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Solution

The fourth proportional to 626,508.96, 864,560.43 and 340,023.30 is: 469,220.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,508.96 : 864,560.43 = 340,023.30 : x
  2. Step 2: Convert to fraction form
    626,508.96/864,560.43 = 340,023.30/x
  3. Step 3: Cross multiply
    626,508.96x = 864,560.43 × 340,023.30
  4. Step 4: Simplify right side
    626,508.96x = 293,970,690,458.02
  5. Step 5: Solve for x
    x = 293,970,690,458.02/626,508.96
  6. Step 6: Final answer
    x = 469,220.25

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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.