Home / 808,580.40-1,211,412.60-386,926.80

Finding the Fourth Proportional to 808,580.40, 1,211,412.60 and 386,926.80

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Solution

The fourth proportional to 808,580.40, 1,211,412.60 and 386,926.80 is: 579,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,580.40 : 1,211,412.60 = 386,926.80 : x
  2. Step 2: Convert to fraction form
    808,580.40/1,211,412.60 = 386,926.80/x
  3. Step 3: Cross multiply
    808,580.40x = 1,211,412.60 × 386,926.80
  4. Step 4: Simplify right side
    808,580.40x = 468,728,000,797.68
  5. Step 5: Solve for x
    x = 468,728,000,797.68/808,580.40
  6. Step 6: Final answer
    x = 579,692.51

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1.5x scale

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.