Home / 813,331.90-1,219,764.57-314,579.26

Finding the Fourth Proportional to 813,331.90, 1,219,764.57 and 314,579.26

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Solution

The fourth proportional to 813,331.90, 1,219,764.57 and 314,579.26 is: 471,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,331.90 : 1,219,764.57 = 314,579.26 : x
  2. Step 2: Convert to fraction form
    813,331.90/1,219,764.57 = 314,579.26/x
  3. Step 3: Cross multiply
    813,331.90x = 1,219,764.57 × 314,579.26
  4. Step 4: Simplify right side
    813,331.90x = 383,712,635,804.82
  5. Step 5: Solve for x
    x = 383,712,635,804.82/813,331.90
  6. Step 6: Final answer
    x = 471,778.66

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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.