Home / 680,815.80-1,021,223.70-415,095.30

Finding the Fourth Proportional to 680,815.80, 1,021,223.70 and 415,095.30

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Solution

The fourth proportional to 680,815.80, 1,021,223.70 and 415,095.30 is: 622,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,815.80 : 1,021,223.70 = 415,095.30 : x
  2. Step 2: Convert to fraction form
    680,815.80/1,021,223.70 = 415,095.30/x
  3. Step 3: Cross multiply
    680,815.80x = 1,021,223.70 × 415,095.30
  4. Step 4: Simplify right side
    680,815.80x = 423,905,158,118.61
  5. Step 5: Solve for x
    x = 423,905,158,118.61/680,815.80
  6. Step 6: Final answer
    x = 622,642.95

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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.