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Finding the Fourth Proportional to 626,601.20, 864,706.74 and 340,118.78

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Solution

The fourth proportional to 626,601.20, 864,706.74 and 340,118.78 is: 469,362.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,601.20 : 864,706.74 = 340,118.78 : x
  2. Step 2: Convert to fraction form
    626,601.20/864,706.74 = 340,118.78/x
  3. Step 3: Cross multiply
    626,601.20x = 864,706.74 × 340,118.78
  4. Step 4: Simplify right side
    626,601.20x = 294,103,001,466.58
  5. Step 5: Solve for x
    x = 294,103,001,466.58/626,601.20
  6. Step 6: Final answer
    x = 469,362.33

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Double scale
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Similar ratio
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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.