Home / 917,720.90-1,376,581.35-728,764.10

Finding the Fourth Proportional to 917,720.90, 1,376,581.35 and 728,764.10

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Solution

The fourth proportional to 917,720.90, 1,376,581.35 and 728,764.10 is: 1,093,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,720.90 : 1,376,581.35 = 728,764.10 : x
  2. Step 2: Convert to fraction form
    917,720.90/1,376,581.35 = 728,764.10/x
  3. Step 3: Cross multiply
    917,720.90x = 1,376,581.35 × 728,764.10
  4. Step 4: Simplify right side
    917,720.90x = 1,003,203,068,609.54
  5. Step 5: Solve for x
    x = 1,003,203,068,609.54/917,720.90
  6. Step 6: Final answer
    x = 1,093,146.15

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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.