Home / 1,129,190.85-1,693,852.20-319,507.56

Finding the Fourth Proportional to 1,129,190.85, 1,693,852.20 and 319,507.56

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Solution

The fourth proportional to 1,129,190.85, 1,693,852.20 and 319,507.56 is: 479,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,190.85 : 1,693,852.20 = 319,507.56 : x
  2. Step 2: Convert to fraction form
    1,129,190.85/1,693,852.20 = 319,507.56/x
  3. Step 3: Cross multiply
    1,129,190.85x = 1,693,852.20 × 319,507.56
  4. Step 4: Simplify right side
    1,129,190.85x = 541,198,583,422.63
  5. Step 5: Solve for x
    x = 541,198,583,422.63/1,129,190.85
  6. Step 6: Final answer
    x = 479,279.99

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Double scale
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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.