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Finding the Fourth Proportional to 770,671.77, 1,062,824.49 and 661,742.07

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Solution

The fourth proportional to 770,671.77, 1,062,824.49 and 661,742.07 is: 912,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,671.77 : 1,062,824.49 = 661,742.07 : x
  2. Step 2: Convert to fraction form
    770,671.77/1,062,824.49 = 661,742.07/x
  3. Step 3: Cross multiply
    770,671.77x = 1,062,824.49 × 661,742.07
  4. Step 4: Simplify right side
    770,671.77x = 703,315,678,059.29
  5. Step 5: Solve for x
    x = 703,315,678,059.29/770,671.77
  6. Step 6: Final answer
    x = 912,600.81

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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.