Home / 1,638,238.56-2,260,780.32-913,132.96

Finding the Fourth Proportional to 1,638,238.56, 2,260,780.32 and 913,132.96

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Solution

The fourth proportional to 1,638,238.56, 2,260,780.32 and 913,132.96 is: 1,260,129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,238.56 : 2,260,780.32 = 913,132.96 : x
  2. Step 2: Convert to fraction form
    1,638,238.56/2,260,780.32 = 913,132.96/x
  3. Step 3: Cross multiply
    1,638,238.56x = 2,260,780.32 × 913,132.96
  4. Step 4: Simplify right side
    1,638,238.56x = 2,064,393,025,511.35
  5. Step 5: Solve for x
    x = 2,064,393,025,511.35/1,638,238.56
  6. Step 6: Final answer
    x = 1,260,129.68

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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.