Home / 1,282,408.40-1,921,078.20-1,124,814.80

Finding the Fourth Proportional to 1,282,408.40, 1,921,078.20 and 1,124,814.80

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Solution

The fourth proportional to 1,282,408.40, 1,921,078.20 and 1,124,814.80 is: 1,684,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,408.40 : 1,921,078.20 = 1,124,814.80 : x
  2. Step 2: Convert to fraction form
    1,282,408.40/1,921,078.20 = 1,124,814.80/x
  3. Step 3: Cross multiply
    1,282,408.40x = 1,921,078.20 × 1,124,814.80
  4. Step 4: Simplify right side
    1,282,408.40x = 2,160,857,191,317.36
  5. Step 5: Solve for x
    x = 2,160,857,191,317.36/1,282,408.40
  6. Step 6: Final answer
    x = 1,684,999.25

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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.