Home / 768,100.34-1,059,977.81-428,568.59

Finding the Fourth Proportional to 768,100.34, 1,059,977.81 and 428,568.59

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Solution

The fourth proportional to 768,100.34, 1,059,977.81 and 428,568.59 is: 591,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,100.34 : 1,059,977.81 = 428,568.59 : x
  2. Step 2: Convert to fraction form
    768,100.34/1,059,977.81 = 428,568.59/x
  3. Step 3: Cross multiply
    768,100.34x = 1,059,977.81 × 428,568.59
  4. Step 4: Simplify right side
    768,100.34x = 454,273,195,462.99
  5. Step 5: Solve for x
    x = 454,273,195,462.99/768,100.34
  6. Step 6: Final answer
    x = 591,424.29

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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.