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Finding the Fourth Proportional to 606,906.40, 910,359.60 and 326,970.40

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Solution

The fourth proportional to 606,906.40, 910,359.60 and 326,970.40 is: 490,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,906.40 : 910,359.60 = 326,970.40 : x
  2. Step 2: Convert to fraction form
    606,906.40/910,359.60 = 326,970.40/x
  3. Step 3: Cross multiply
    606,906.40x = 910,359.60 × 326,970.40
  4. Step 4: Simplify right side
    606,906.40x = 297,660,642,555.84
  5. Step 5: Solve for x
    x = 297,660,642,555.84/606,906.40
  6. Step 6: Final answer
    x = 490,455.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.