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Finding the Fourth Proportional to 676,858.10, 933,999.09 and 404,870.90

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Solution

The fourth proportional to 676,858.10, 933,999.09 and 404,870.90 is: 558,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,858.10 : 933,999.09 = 404,870.90 : x
  2. Step 2: Convert to fraction form
    676,858.10/933,999.09 = 404,870.90/x
  3. Step 3: Cross multiply
    676,858.10x = 933,999.09 × 404,870.90
  4. Step 4: Simplify right side
    676,858.10x = 378,149,052,167.48
  5. Step 5: Solve for x
    x = 378,149,052,167.48/676,858.10
  6. Step 6: Final answer
    x = 558,682.91

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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.