Home / 811,099.72-1,216,714.74-242,439.40

Finding the Fourth Proportional to 811,099.72, 1,216,714.74 and 242,439.40

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Solution

The fourth proportional to 811,099.72, 1,216,714.74 and 242,439.40 is: 363,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,099.72 : 1,216,714.74 = 242,439.40 : x
  2. Step 2: Convert to fraction form
    811,099.72/1,216,714.74 = 242,439.40/x
  3. Step 3: Cross multiply
    811,099.72x = 1,216,714.74 × 242,439.40
  4. Step 4: Simplify right side
    811,099.72x = 294,979,591,536.76
  5. Step 5: Solve for x
    x = 294,979,591,536.76/811,099.72
  6. Step 6: Final answer
    x = 363,678.58

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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.