Home / 766,011.33-1,149,018.21-316,238.58

Finding the Fourth Proportional to 766,011.33, 1,149,018.21 and 316,238.58

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Solution

The fourth proportional to 766,011.33, 1,149,018.21 and 316,238.58 is: 474,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,011.33 : 1,149,018.21 = 316,238.58 : x
  2. Step 2: Convert to fraction form
    766,011.33/1,149,018.21 = 316,238.58/x
  3. Step 3: Cross multiply
    766,011.33x = 1,149,018.21 × 316,238.58
  4. Step 4: Simplify right side
    766,011.33x = 363,363,887,124.54
  5. Step 5: Solve for x
    x = 363,363,887,124.54/766,011.33
  6. Step 6: Final answer
    x = 474,358.37

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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.