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Finding the Fourth Proportional to 626,489.54, 864,555.21 and 354,552.50

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Solution

The fourth proportional to 626,489.54, 864,555.21 and 354,552.50 is: 489,282.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,489.54 : 864,555.21 = 354,552.50 : x
  2. Step 2: Convert to fraction form
    626,489.54/864,555.21 = 354,552.50/x
  3. Step 3: Cross multiply
    626,489.54x = 864,555.21 × 354,552.50
  4. Step 4: Simplify right side
    626,489.54x = 306,530,211,093.53
  5. Step 5: Solve for x
    x = 306,530,211,093.53/626,489.54
  6. Step 6: Final answer
    x = 489,282.25

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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.