Home / 1,690,390.62-2,535,520.32-679,209.30

Finding the Fourth Proportional to 1,690,390.62, 2,535,520.32 and 679,209.30

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Solution

The fourth proportional to 1,690,390.62, 2,535,520.32 and 679,209.30 is: 1,018,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,390.62 : 2,535,520.32 = 679,209.30 : x
  2. Step 2: Convert to fraction form
    1,690,390.62/2,535,520.32 = 679,209.30/x
  3. Step 3: Cross multiply
    1,690,390.62x = 2,535,520.32 × 679,209.30
  4. Step 4: Simplify right side
    1,690,390.62x = 1,722,148,981,682.98
  5. Step 5: Solve for x
    x = 1,722,148,981,682.98/1,690,390.62
  6. Step 6: Final answer
    x = 1,018,787.59

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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.