Home / 1,420,806.29-1,960,783.79-869,349.46

Finding the Fourth Proportional to 1,420,806.29, 1,960,783.79 and 869,349.46

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Solution

The fourth proportional to 1,420,806.29, 1,960,783.79 and 869,349.46 is: 1,199,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,806.29 : 1,960,783.79 = 869,349.46 : x
  2. Step 2: Convert to fraction form
    1,420,806.29/1,960,783.79 = 869,349.46/x
  3. Step 3: Cross multiply
    1,420,806.29x = 1,960,783.79 × 869,349.46
  4. Step 4: Simplify right side
    1,420,806.29x = 1,704,606,328,331.11
  5. Step 5: Solve for x
    x = 1,704,606,328,331.11/1,420,806.29
  6. Step 6: Final answer
    x = 1,199,745.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.