Home / 1,142,142.67-1,713,217.86-289,213.91

Finding the Fourth Proportional to 1,142,142.67, 1,713,217.86 and 289,213.91

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Solution

The fourth proportional to 1,142,142.67, 1,713,217.86 and 289,213.91 is: 433,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,142.67 : 1,713,217.86 = 289,213.91 : x
  2. Step 2: Convert to fraction form
    1,142,142.67/1,713,217.86 = 289,213.91/x
  3. Step 3: Cross multiply
    1,142,142.67x = 1,713,217.86 × 289,213.91
  4. Step 4: Simplify right side
    1,142,142.67x = 495,486,435,972.43
  5. Step 5: Solve for x
    x = 495,486,435,972.43/1,142,142.67
  6. Step 6: Final answer
    x = 433,821.84

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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.