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Finding the Fourth Proportional to 668,893.90, 1,003,494.12 and 289,878.26

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Solution

The fourth proportional to 668,893.90, 1,003,494.12 and 289,878.26 is: 434,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,893.90 : 1,003,494.12 = 289,878.26 : x
  2. Step 2: Convert to fraction form
    668,893.90/1,003,494.12 = 289,878.26/x
  3. Step 3: Cross multiply
    668,893.90x = 1,003,494.12 × 289,878.26
  4. Step 4: Simplify right side
    668,893.90x = 290,891,129,425.83
  5. Step 5: Solve for x
    x = 290,891,129,425.83/668,893.90
  6. Step 6: Final answer
    x = 434,883.81

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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.