Home / 806,761.60-1,210,142.40-386,857.60

Finding the Fourth Proportional to 806,761.60, 1,210,142.40 and 386,857.60

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Solution

The fourth proportional to 806,761.60, 1,210,142.40 and 386,857.60 is: 580,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,761.60 : 1,210,142.40 = 386,857.60 : x
  2. Step 2: Convert to fraction form
    806,761.60/1,210,142.40 = 386,857.60/x
  3. Step 3: Cross multiply
    806,761.60x = 1,210,142.40 × 386,857.60
  4. Step 4: Simplify right side
    806,761.60x = 468,152,784,522.24
  5. Step 5: Solve for x
    x = 468,152,784,522.24/806,761.60
  6. Step 6: Final answer
    x = 580,286.40

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Double scale
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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.