Home / 766,272.51-1,149,409.08-316,499.10

Finding the Fourth Proportional to 766,272.51, 1,149,409.08 and 316,499.10

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Solution

The fourth proportional to 766,272.51, 1,149,409.08 and 316,499.10 is: 474,748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,272.51 : 1,149,409.08 = 316,499.10 : x
  2. Step 2: Convert to fraction form
    766,272.51/1,149,409.08 = 316,499.10/x
  3. Step 3: Cross multiply
    766,272.51x = 1,149,409.08 × 316,499.10
  4. Step 4: Simplify right side
    766,272.51x = 363,786,939,351.83
  5. Step 5: Solve for x
    x = 363,786,939,351.83/766,272.51
  6. Step 6: Final answer
    x = 474,748.78

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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.