Home / 1,289,849.40-1,934,774.10-343,315.80

Finding the Fourth Proportional to 1,289,849.40, 1,934,774.10 and 343,315.80

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Solution

The fourth proportional to 1,289,849.40, 1,934,774.10 and 343,315.80 is: 514,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,849.40 : 1,934,774.10 = 343,315.80 : x
  2. Step 2: Convert to fraction form
    1,289,849.40/1,934,774.10 = 343,315.80/x
  3. Step 3: Cross multiply
    1,289,849.40x = 1,934,774.10 × 343,315.80
  4. Step 4: Simplify right side
    1,289,849.40x = 664,238,517,960.78
  5. Step 5: Solve for x
    x = 664,238,517,960.78/1,289,849.40
  6. Step 6: Final answer
    x = 514,973.70

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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.