Home / 1,240,815.85-1,712,288.58-689,529.69

Finding the Fourth Proportional to 1,240,815.85, 1,712,288.58 and 689,529.69

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Solution

The fourth proportional to 1,240,815.85, 1,712,288.58 and 689,529.69 is: 951,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,815.85 : 1,712,288.58 = 689,529.69 : x
  2. Step 2: Convert to fraction form
    1,240,815.85/1,712,288.58 = 689,529.69/x
  3. Step 3: Cross multiply
    1,240,815.85x = 1,712,288.58 × 689,529.69
  4. Step 4: Simplify right side
    1,240,815.85x = 1,180,673,813,757.94
  5. Step 5: Solve for x
    x = 1,180,673,813,757.94/1,240,815.85
  6. Step 6: Final answer
    x = 951,530.25

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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.