Home / 1,291,060.23-1,781,658.36-718,100.40

Finding the Fourth Proportional to 1,291,060.23, 1,781,658.36 and 718,100.40

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Solution

The fourth proportional to 1,291,060.23, 1,781,658.36 and 718,100.40 is: 990,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,060.23 : 1,781,658.36 = 718,100.40 : x
  2. Step 2: Convert to fraction form
    1,291,060.23/1,781,658.36 = 718,100.40/x
  3. Step 3: Cross multiply
    1,291,060.23x = 1,781,658.36 × 718,100.40
  4. Step 4: Simplify right side
    1,291,060.23x = 1,279,409,577,388.84
  5. Step 5: Solve for x
    x = 1,279,409,577,388.84/1,291,060.23
  6. Step 6: Final answer
    x = 990,975.90

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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.