Home / 814,064.72-1,220,790.36-340,782.80

Finding the Fourth Proportional to 814,064.72, 1,220,790.36 and 340,782.80

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Solution

The fourth proportional to 814,064.72, 1,220,790.36 and 340,782.80 is: 511,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,064.72 : 1,220,790.36 = 340,782.80 : x
  2. Step 2: Convert to fraction form
    814,064.72/1,220,790.36 = 340,782.80/x
  3. Step 3: Cross multiply
    814,064.72x = 1,220,790.36 × 340,782.80
  4. Step 4: Simplify right side
    814,064.72x = 416,024,357,093.81
  5. Step 5: Solve for x
    x = 416,024,357,093.81/814,064.72
  6. Step 6: Final answer
    x = 511,045.80

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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.