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Finding the Fourth Proportional to 479,284.63, 661,389.65 and 261,480.39

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Solution

The fourth proportional to 479,284.63, 661,389.65 and 261,480.39 is: 360,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,284.63 : 661,389.65 = 261,480.39 : x
  2. Step 2: Convert to fraction form
    479,284.63/661,389.65 = 261,480.39/x
  3. Step 3: Cross multiply
    479,284.63x = 661,389.65 × 261,480.39
  4. Step 4: Simplify right side
    479,284.63x = 172,940,419,009.61
  5. Step 5: Solve for x
    x = 172,940,419,009.61/479,284.63
  6. Step 6: Final answer
    x = 360,830.30

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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.