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Finding the Fourth Proportional to 628,847.01, 867,809.00 and 342,367.11

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Solution

The fourth proportional to 628,847.01, 867,809.00 and 342,367.11 is: 472,466.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,847.01 : 867,809.00 = 342,367.11 : x
  2. Step 2: Convert to fraction form
    628,847.01/867,809.00 = 342,367.11/x
  3. Step 3: Cross multiply
    628,847.01x = 867,809.00 × 342,367.11
  4. Step 4: Simplify right side
    628,847.01x = 297,109,257,650.15
  5. Step 5: Solve for x
    x = 297,109,257,650.15/628,847.01
  6. Step 6: Final answer
    x = 472,466.68

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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.