Home / 781,881.96-1,078,440.77-717,558.96

Finding the Fourth Proportional to 781,881.96, 1,078,440.77 and 717,558.96

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Solution

The fourth proportional to 781,881.96, 1,078,440.77 and 717,558.96 is: 989,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,881.96 : 1,078,440.77 = 717,558.96 : x
  2. Step 2: Convert to fraction form
    781,881.96/1,078,440.77 = 717,558.96/x
  3. Step 3: Cross multiply
    781,881.96x = 1,078,440.77 × 717,558.96
  4. Step 4: Simplify right side
    781,881.96x = 773,844,833,755.00
  5. Step 5: Solve for x
    x = 773,844,833,755.00/781,881.96
  6. Step 6: Final answer
    x = 989,720.79

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1.5x scale

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.