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Finding the Fourth Proportional to 670,690.44, 925,084.14 and 455,456.88

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Solution

The fourth proportional to 670,690.44, 925,084.14 and 455,456.88 is: 628,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,690.44 : 925,084.14 = 455,456.88 : x
  2. Step 2: Convert to fraction form
    670,690.44/925,084.14 = 455,456.88/x
  3. Step 3: Cross multiply
    670,690.44x = 925,084.14 × 455,456.88
  4. Step 4: Simplify right side
    670,690.44x = 421,335,936,141.88
  5. Step 5: Solve for x
    x = 421,335,936,141.88/670,690.44
  6. Step 6: Final answer
    x = 628,212.23

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Double scale
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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.