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Finding the Fourth Proportional to 606,646.40, 909,969.60 and 269,686.40

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Solution

The fourth proportional to 606,646.40, 909,969.60 and 269,686.40 is: 404,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,646.40 : 909,969.60 = 269,686.40 : x
  2. Step 2: Convert to fraction form
    606,646.40/909,969.60 = 269,686.40/x
  3. Step 3: Cross multiply
    606,646.40x = 909,969.60 × 269,686.40
  4. Step 4: Simplify right side
    606,646.40x = 245,406,425,533.44
  5. Step 5: Solve for x
    x = 245,406,425,533.44/606,646.40
  6. Step 6: Final answer
    x = 404,529.60

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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.