Home / 814,880.70-1,221,336.90-415,315.80

Finding the Fourth Proportional to 814,880.70, 1,221,336.90 and 415,315.80

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Solution

The fourth proportional to 814,880.70, 1,221,336.90 and 415,315.80 is: 622,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,880.70 : 1,221,336.90 = 415,315.80 : x
  2. Step 2: Convert to fraction form
    814,880.70/1,221,336.90 = 415,315.80/x
  3. Step 3: Cross multiply
    814,880.70x = 1,221,336.90 × 415,315.80
  4. Step 4: Simplify right side
    814,880.70x = 507,240,511,693.02
  5. Step 5: Solve for x
    x = 507,240,511,693.02/814,880.70
  6. Step 6: Final answer
    x = 622,472.11

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1.5x scale

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.