Home / 811,848.20-1,217,772.30-313,212.20

Finding the Fourth Proportional to 811,848.20, 1,217,772.30 and 313,212.20

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Solution

The fourth proportional to 811,848.20, 1,217,772.30 and 313,212.20 is: 469,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,848.20 : 1,217,772.30 = 313,212.20 : x
  2. Step 2: Convert to fraction form
    811,848.20/1,217,772.30 = 313,212.20/x
  3. Step 3: Cross multiply
    811,848.20x = 1,217,772.30 × 313,212.20
  4. Step 4: Simplify right side
    811,848.20x = 381,421,141,182.06
  5. Step 5: Solve for x
    x = 381,421,141,182.06/811,848.20
  6. Step 6: Final answer
    x = 469,818.30

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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.