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Finding the Fourth Proportional to 672,368.40, 1,008,552.60 and 667,702.80

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Solution

The fourth proportional to 672,368.40, 1,008,552.60 and 667,702.80 is: 1,001,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,368.40 : 1,008,552.60 = 667,702.80 : x
  2. Step 2: Convert to fraction form
    672,368.40/1,008,552.60 = 667,702.80/x
  3. Step 3: Cross multiply
    672,368.40x = 1,008,552.60 × 667,702.80
  4. Step 4: Simplify right side
    672,368.40x = 673,413,394,967.28
  5. Step 5: Solve for x
    x = 673,413,394,967.28/672,368.40
  6. Step 6: Final answer
    x = 1,001,554.20

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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.