Home / 1,290,157.20-1,780,663.70-854,579.70

Finding the Fourth Proportional to 1,290,157.20, 1,780,663.70 and 854,579.70

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Solution

The fourth proportional to 1,290,157.20, 1,780,663.70 and 854,579.70 is: 1,179,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,157.20 : 1,780,663.70 = 854,579.70 : x
  2. Step 2: Convert to fraction form
    1,290,157.20/1,780,663.70 = 854,579.70/x
  3. Step 3: Cross multiply
    1,290,157.20x = 1,780,663.70 × 854,579.70
  4. Step 4: Simplify right side
    1,290,157.20x = 1,521,719,052,683.34
  5. Step 5: Solve for x
    x = 1,521,719,052,683.34/1,290,157.20
  6. Step 6: Final answer
    x = 1,179,483.44

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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.