Home / 3,121,089-4,307,102.82-1,690,305

Finding the Fourth Proportional to 3,121,089, 4,307,102.82 and 1,690,305

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Solution

The fourth proportional to 3,121,089, 4,307,102.82 and 1,690,305 is: 2,332,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,089 : 4,307,102.82 = 1,690,305 : x
  2. Step 2: Convert to fraction form
    3,121,089/4,307,102.82 = 1,690,305/x
  3. Step 3: Cross multiply
    3,121,089x = 4,307,102.82 × 1,690,305
  4. Step 4: Simplify right side
    3,121,089x = 7,280,317,432,160.10
  5. Step 5: Solve for x
    x = 7,280,317,432,160.10/3,121,089
  6. Step 6: Final answer
    x = 2,332,620.90

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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.