Home / 1,221,352.40-1,833,778.20-689,911.40

Finding the Fourth Proportional to 1,221,352.40, 1,833,778.20 and 689,911.40

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Solution

The fourth proportional to 1,221,352.40, 1,833,778.20 and 689,911.40 is: 1,035,855.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,352.40 : 1,833,778.20 = 689,911.40 : x
  2. Step 2: Convert to fraction form
    1,221,352.40/1,833,778.20 = 689,911.40/x
  3. Step 3: Cross multiply
    1,221,352.40x = 1,833,778.20 × 689,911.40
  4. Step 4: Simplify right side
    1,221,352.40x = 1,265,144,485,251.48
  5. Step 5: Solve for x
    x = 1,265,144,485,251.48/1,221,352.40
  6. Step 6: Final answer
    x = 1,035,855.41

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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.