Home / 811,761.60-1,120,100.16-509,741.76

Finding the Fourth Proportional to 811,761.60, 1,120,100.16 and 509,741.76

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Solution

The fourth proportional to 811,761.60, 1,120,100.16 and 509,741.76 is: 703,361.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,761.60 : 1,120,100.16 = 509,741.76 : x
  2. Step 2: Convert to fraction form
    811,761.60/1,120,100.16 = 509,741.76/x
  3. Step 3: Cross multiply
    811,761.60x = 1,120,100.16 × 509,741.76
  4. Step 4: Simplify right side
    811,761.60x = 570,961,826,934.68
  5. Step 5: Solve for x
    x = 570,961,826,934.68/811,761.60
  6. Step 6: Final answer
    x = 703,361.46

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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.