Home / 1,439,965.80-2,156,838.30-1,191,133.80

Finding the Fourth Proportional to 1,439,965.80, 2,156,838.30 and 1,191,133.80

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Solution

The fourth proportional to 1,439,965.80, 2,156,838.30 and 1,191,133.80 is: 1,784,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,965.80 : 2,156,838.30 = 1,191,133.80 : x
  2. Step 2: Convert to fraction form
    1,439,965.80/2,156,838.30 = 1,191,133.80/x
  3. Step 3: Cross multiply
    1,439,965.80x = 2,156,838.30 × 1,191,133.80
  4. Step 4: Simplify right side
    1,439,965.80x = 2,569,083,000,264.54
  5. Step 5: Solve for x
    x = 2,569,083,000,264.54/1,439,965.80
  6. Step 6: Final answer
    x = 1,784,127.79

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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.