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Finding the Fourth Proportional to 880,881.80, 1,321,322.70 and 319,843.40

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Solution

The fourth proportional to 880,881.80, 1,321,322.70 and 319,843.40 is: 479,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,881.80 : 1,321,322.70 = 319,843.40 : x
  2. Step 2: Convert to fraction form
    880,881.80/1,321,322.70 = 319,843.40/x
  3. Step 3: Cross multiply
    880,881.80x = 1,321,322.70 × 319,843.40
  4. Step 4: Simplify right side
    880,881.80x = 422,616,344,865.18
  5. Step 5: Solve for x
    x = 422,616,344,865.18/880,881.80
  6. Step 6: Final answer
    x = 479,765.10

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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.