Home / 811,811.81-1,217,692.60-385,654.41

Finding the Fourth Proportional to 811,811.81, 1,217,692.60 and 385,654.41

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Solution

The fourth proportional to 811,811.81, 1,217,692.60 and 385,654.41 is: 578,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,811.81 : 1,217,692.60 = 385,654.41 : x
  2. Step 2: Convert to fraction form
    811,811.81/1,217,692.60 = 385,654.41/x
  3. Step 3: Cross multiply
    811,811.81x = 1,217,692.60 × 385,654.41
  4. Step 4: Simplify right side
    811,811.81x = 469,608,521,214.37
  5. Step 5: Solve for x
    x = 469,608,521,214.37/811,811.81
  6. Step 6: Final answer
    x = 578,469.68

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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.