Home / 1,221,118.34-1,685,246.77-677,429.27

Finding the Fourth Proportional to 1,221,118.34, 1,685,246.77 and 677,429.27

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Solution

The fourth proportional to 1,221,118.34, 1,685,246.77 and 677,429.27 is: 934,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,118.34 : 1,685,246.77 = 677,429.27 : x
  2. Step 2: Convert to fraction form
    1,221,118.34/1,685,246.77 = 677,429.27/x
  3. Step 3: Cross multiply
    1,221,118.34x = 1,685,246.77 × 677,429.27
  4. Step 4: Simplify right side
    1,221,118.34x = 1,141,635,493,580.16
  5. Step 5: Solve for x
    x = 1,141,635,493,580.16/1,221,118.34
  6. Step 6: Final answer
    x = 934,909.80

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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.