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Finding the Fourth Proportional to 626,563.96, 864,635.10 and 340,077.90

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Solution

The fourth proportional to 626,563.96, 864,635.10 and 340,077.90 is: 469,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,563.96 : 864,635.10 = 340,077.90 : x
  2. Step 2: Convert to fraction form
    626,563.96/864,635.10 = 340,077.90/x
  3. Step 3: Cross multiply
    626,563.96x = 864,635.10 × 340,077.90
  4. Step 4: Simplify right side
    626,563.96x = 294,043,289,074.29
  5. Step 5: Solve for x
    x = 294,043,289,074.29/626,563.96
  6. Step 6: Final answer
    x = 469,294.93

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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.