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Finding the Fourth Proportional to 880,725.80, 1,321,304.70 and 407,311.40

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Solution

The fourth proportional to 880,725.80, 1,321,304.70 and 407,311.40 is: 611,066.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,725.80 : 1,321,304.70 = 407,311.40 : x
  2. Step 2: Convert to fraction form
    880,725.80/1,321,304.70 = 407,311.40/x
  3. Step 3: Cross multiply
    880,725.80x = 1,321,304.70 × 407,311.40
  4. Step 4: Simplify right side
    880,725.80x = 538,182,467,183.58
  5. Step 5: Solve for x
    x = 538,182,467,183.58/880,725.80
  6. Step 6: Final answer
    x = 611,066.99

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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.