Home / 1,221,621.28-1,685,917.10-705,396.94

Finding the Fourth Proportional to 1,221,621.28, 1,685,917.10 and 705,396.94

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Solution

The fourth proportional to 1,221,621.28, 1,685,917.10 and 705,396.94 is: 973,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,621.28 : 1,685,917.10 = 705,396.94 : x
  2. Step 2: Convert to fraction form
    1,221,621.28/1,685,917.10 = 705,396.94/x
  3. Step 3: Cross multiply
    1,221,621.28x = 1,685,917.10 × 705,396.94
  4. Step 4: Simplify right side
    1,221,621.28x = 1,189,240,763,433.67
  5. Step 5: Solve for x
    x = 1,189,240,763,433.67/1,221,621.28
  6. Step 6: Final answer
    x = 973,493.82

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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.