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Finding the Fourth Proportional to 555,648.56, 766,794.28 and 301,000.76

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Solution

The fourth proportional to 555,648.56, 766,794.28 and 301,000.76 is: 415,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,648.56 : 766,794.28 = 301,000.76 : x
  2. Step 2: Convert to fraction form
    555,648.56/766,794.28 = 301,000.76/x
  3. Step 3: Cross multiply
    555,648.56x = 766,794.28 × 301,000.76
  4. Step 4: Simplify right side
    555,648.56x = 230,805,661,043.65
  5. Step 5: Solve for x
    x = 230,805,661,043.65/555,648.56
  6. Step 6: Final answer
    x = 415,380.65

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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.