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Finding the Fourth Proportional to 606,645.40, 909,968.10 and 207,226.30

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Solution

The fourth proportional to 606,645.40, 909,968.10 and 207,226.30 is: 310,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,645.40 : 909,968.10 = 207,226.30 : x
  2. Step 2: Convert to fraction form
    606,645.40/909,968.10 = 207,226.30/x
  3. Step 3: Cross multiply
    606,645.40x = 909,968.10 × 207,226.30
  4. Step 4: Simplify right side
    606,645.40x = 188,569,322,481.03
  5. Step 5: Solve for x
    x = 188,569,322,481.03/606,645.40
  6. Step 6: Final answer
    x = 310,839.45

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.