Home / 811,692.80-1,215,789.60-723,046.40

Finding the Fourth Proportional to 811,692.80, 1,215,789.60 and 723,046.40

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Solution

The fourth proportional to 811,692.80, 1,215,789.60 and 723,046.40 is: 1,083,011.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,692.80 : 1,215,789.60 = 723,046.40 : x
  2. Step 2: Convert to fraction form
    811,692.80/1,215,789.60 = 723,046.40/x
  3. Step 3: Cross multiply
    811,692.80x = 1,215,789.60 × 723,046.40
  4. Step 4: Simplify right side
    811,692.80x = 879,072,293,437.44
  5. Step 5: Solve for x
    x = 879,072,293,437.44/811,692.80
  6. Step 6: Final answer
    x = 1,083,011.08

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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.