Home / 1,221,403.81-1,685,504.50-705,140.29

Finding the Fourth Proportional to 1,221,403.81, 1,685,504.50 and 705,140.29

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Solution

The fourth proportional to 1,221,403.81, 1,685,504.50 and 705,140.29 is: 973,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,403.81 : 1,685,504.50 = 705,140.29 : x
  2. Step 2: Convert to fraction form
    1,221,403.81/1,685,504.50 = 705,140.29/x
  3. Step 3: Cross multiply
    1,221,403.81x = 1,685,504.50 × 705,140.29
  4. Step 4: Simplify right side
    1,221,403.81x = 1,188,517,122,789.37
  5. Step 5: Solve for x
    x = 1,188,517,122,789.37/1,221,403.81
  6. Step 6: Final answer
    x = 973,074.68

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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.