Home / 808,628.40-1,211,484.60-386,974.80

Finding the Fourth Proportional to 808,628.40, 1,211,484.60 and 386,974.80

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Solution

The fourth proportional to 808,628.40, 1,211,484.60 and 386,974.80 is: 579,764.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,628.40 : 1,211,484.60 = 386,974.80 : x
  2. Step 2: Convert to fraction form
    808,628.40/1,211,484.60 = 386,974.80/x
  3. Step 3: Cross multiply
    808,628.40x = 1,211,484.60 × 386,974.80
  4. Step 4: Simplify right side
    808,628.40x = 468,814,010,788.08
  5. Step 5: Solve for x
    x = 468,814,010,788.08/808,628.40
  6. Step 6: Final answer
    x = 579,764.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.