Home / 1,420,848.90-2,136,522.15-1,189,901.70

Finding the Fourth Proportional to 1,420,848.90, 2,136,522.15 and 1,189,901.70

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Solution

The fourth proportional to 1,420,848.90, 2,136,522.15 and 1,189,901.70 is: 1,789,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,848.90 : 2,136,522.15 = 1,189,901.70 : x
  2. Step 2: Convert to fraction form
    1,420,848.90/2,136,522.15 = 1,189,901.70/x
  3. Step 3: Cross multiply
    1,420,848.90x = 2,136,522.15 × 1,189,901.70
  4. Step 4: Simplify right side
    1,420,848.90x = 2,542,251,338,372.65
  5. Step 5: Solve for x
    x = 2,542,251,338,372.65/1,420,848.90
  6. Step 6: Final answer
    x = 1,789,248.20

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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.