Home / 1,298,126.22-1,791,404.16-717,388.36

Finding the Fourth Proportional to 1,298,126.22, 1,791,404.16 and 717,388.36

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Solution

The fourth proportional to 1,298,126.22, 1,791,404.16 and 717,388.36 is: 989,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,126.22 : 1,791,404.16 = 717,388.36 : x
  2. Step 2: Convert to fraction form
    1,298,126.22/1,791,404.16 = 717,388.36/x
  3. Step 3: Cross multiply
    1,298,126.22x = 1,791,404.16 × 717,388.36
  4. Step 4: Simplify right side
    1,298,126.22x = 1,285,132,492,439.58
  5. Step 5: Solve for x
    x = 1,285,132,492,439.58/1,298,126.22
  6. Step 6: Final answer
    x = 989,990.40

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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.