Home / 1,328,837.30-1,991,636.58-688,788.16

Finding the Fourth Proportional to 1,328,837.30, 1,991,636.58 and 688,788.16

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Solution

The fourth proportional to 1,328,837.30, 1,991,636.58 and 688,788.16 is: 1,032,342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,837.30 : 1,991,636.58 = 688,788.16 : x
  2. Step 2: Convert to fraction form
    1,328,837.30/1,991,636.58 = 688,788.16/x
  3. Step 3: Cross multiply
    1,328,837.30x = 1,991,636.58 × 688,788.16
  4. Step 4: Simplify right side
    1,328,837.30x = 1,371,815,690,993.54
  5. Step 5: Solve for x
    x = 1,371,815,690,993.54/1,328,837.30
  6. Step 6: Final answer
    x = 1,032,342.86

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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.