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Finding the Fourth Proportional to 768,106.82, 1,059,907.02 and 423,936.41

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Solution

The fourth proportional to 768,106.82, 1,059,907.02 and 423,936.41 is: 584,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,106.82 : 1,059,907.02 = 423,936.41 : x
  2. Step 2: Convert to fraction form
    768,106.82/1,059,907.02 = 423,936.41/x
  3. Step 3: Cross multiply
    768,106.82x = 1,059,907.02 × 423,936.41
  4. Step 4: Simplify right side
    768,106.82x = 449,333,171,693.06
  5. Step 5: Solve for x
    x = 449,333,171,693.06/768,106.82
  6. Step 6: Final answer
    x = 584,987.87

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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.