Home / 1,279,123.80-1,919,376.90-569,261.40

Finding the Fourth Proportional to 1,279,123.80, 1,919,376.90 and 569,261.40

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Solution

The fourth proportional to 1,279,123.80, 1,919,376.90 and 569,261.40 is: 854,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,123.80 : 1,919,376.90 = 569,261.40 : x
  2. Step 2: Convert to fraction form
    1,279,123.80/1,919,376.90 = 569,261.40/x
  3. Step 3: Cross multiply
    1,279,123.80x = 1,919,376.90 × 569,261.40
  4. Step 4: Simplify right side
    1,279,123.80x = 1,092,627,181,221.66
  5. Step 5: Solve for x
    x = 1,092,627,181,221.66/1,279,123.80
  6. Step 6: Final answer
    x = 854,199.71

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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.