Home / 689,276.49-1,032,968.88-436,103.78

Finding the Fourth Proportional to 689,276.49, 1,032,968.88 and 436,103.78

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Solution

The fourth proportional to 689,276.49, 1,032,968.88 and 436,103.78 is: 653,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,276.49 : 1,032,968.88 = 436,103.78 : x
  2. Step 2: Convert to fraction form
    689,276.49/1,032,968.88 = 436,103.78/x
  3. Step 3: Cross multiply
    689,276.49x = 1,032,968.88 × 436,103.78
  4. Step 4: Simplify right side
    689,276.49x = 450,481,628,025.52
  5. Step 5: Solve for x
    x = 450,481,628,025.52/689,276.49
  6. Step 6: Final answer
    x = 653,557.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.