Home / 785,226.40-1,176,457.20-644,221.60

Finding the Fourth Proportional to 785,226.40, 1,176,457.20 and 644,221.60

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Solution

The fourth proportional to 785,226.40, 1,176,457.20 and 644,221.60 is: 965,198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,226.40 : 1,176,457.20 = 644,221.60 : x
  2. Step 2: Convert to fraction form
    785,226.40/1,176,457.20 = 644,221.60/x
  3. Step 3: Cross multiply
    785,226.40x = 1,176,457.20 × 644,221.60
  4. Step 4: Simplify right side
    785,226.40x = 757,899,139,715.52
  5. Step 5: Solve for x
    x = 757,899,139,715.52/785,226.40
  6. Step 6: Final answer
    x = 965,198.24

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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.