Home / 1,439,972.80-2,156,848.80-1,191,140.80

Finding the Fourth Proportional to 1,439,972.80, 2,156,848.80 and 1,191,140.80

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Solution

The fourth proportional to 1,439,972.80, 2,156,848.80 and 1,191,140.80 is: 1,784,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,972.80 : 2,156,848.80 = 1,191,140.80 : x
  2. Step 2: Convert to fraction form
    1,439,972.80/2,156,848.80 = 1,191,140.80/x
  3. Step 3: Cross multiply
    1,439,972.80x = 2,156,848.80 × 1,191,140.80
  4. Step 4: Simplify right side
    1,439,972.80x = 2,569,110,605,111.04
  5. Step 5: Solve for x
    x = 2,569,110,605,111.04/1,439,972.80
  6. Step 6: Final answer
    x = 1,784,138.29

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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.