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Finding the Fourth Proportional to 626,563.22, 864,658.89 and 340,083.32

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Solution

The fourth proportional to 626,563.22, 864,658.89 and 340,083.32 is: 469,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,563.22 : 864,658.89 = 340,083.32 : x
  2. Step 2: Convert to fraction form
    626,563.22/864,658.89 = 340,083.32/x
  3. Step 3: Cross multiply
    626,563.22x = 864,658.89 × 340,083.32
  4. Step 4: Simplify right side
    626,563.22x = 294,056,061,655.42
  5. Step 5: Solve for x
    x = 294,056,061,655.42/626,563.22
  6. Step 6: Final answer
    x = 469,315.87

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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.