Home / 806,790.40-1,210,185.60-215,814.40

Finding the Fourth Proportional to 806,790.40, 1,210,185.60 and 215,814.40

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Solution

The fourth proportional to 806,790.40, 1,210,185.60 and 215,814.40 is: 323,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,790.40 : 1,210,185.60 = 215,814.40 : x
  2. Step 2: Convert to fraction form
    806,790.40/1,210,185.60 = 215,814.40/x
  3. Step 3: Cross multiply
    806,790.40x = 1,210,185.60 × 215,814.40
  4. Step 4: Simplify right side
    806,790.40x = 261,175,479,152.64
  5. Step 5: Solve for x
    x = 261,175,479,152.64/806,790.40
  6. Step 6: Final answer
    x = 323,721.60

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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.