Home / 1,221,373.62-1,685,697.74-677,684.57

Finding the Fourth Proportional to 1,221,373.62, 1,685,697.74 and 677,684.57

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Solution

The fourth proportional to 1,221,373.62, 1,685,697.74 and 677,684.57 is: 935,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,373.62 : 1,685,697.74 = 677,684.57 : x
  2. Step 2: Convert to fraction form
    1,221,373.62/1,685,697.74 = 677,684.57/x
  3. Step 3: Cross multiply
    1,221,373.62x = 1,685,697.74 × 677,684.57
  4. Step 4: Simplify right side
    1,221,373.62x = 1,142,371,347,579.51
  5. Step 5: Solve for x
    x = 1,142,371,347,579.51/1,221,373.62
  6. Step 6: Final answer
    x = 935,316.86

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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.