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Finding the Fourth Proportional to 626,469.80, 864,403.26 and 381,290.34

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Solution

The fourth proportional to 626,469.80, 864,403.26 and 381,290.34 is: 526,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,469.80 : 864,403.26 = 381,290.34 : x
  2. Step 2: Convert to fraction form
    626,469.80/864,403.26 = 381,290.34/x
  3. Step 3: Cross multiply
    626,469.80x = 864,403.26 × 381,290.34
  4. Step 4: Simplify right side
    626,469.80x = 329,588,612,902.51
  5. Step 5: Solve for x
    x = 329,588,612,902.51/626,469.80
  6. Step 6: Final answer
    x = 526,104.56

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1.5x scale

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.