Home / 680,905.80-1,021,358.70-415,185.30

Finding the Fourth Proportional to 680,905.80, 1,021,358.70 and 415,185.30

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Solution

The fourth proportional to 680,905.80, 1,021,358.70 and 415,185.30 is: 622,777.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,905.80 : 1,021,358.70 = 415,185.30 : x
  2. Step 2: Convert to fraction form
    680,905.80/1,021,358.70 = 415,185.30/x
  3. Step 3: Cross multiply
    680,905.80x = 1,021,358.70 × 415,185.30
  4. Step 4: Simplify right side
    680,905.80x = 424,053,118,267.11
  5. Step 5: Solve for x
    x = 424,053,118,267.11/680,905.80
  6. Step 6: Final answer
    x = 622,777.95

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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.