Home / 680,311.20-1,020,614.40-206,984.28

Finding the Fourth Proportional to 680,311.20, 1,020,614.40 and 206,984.28

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Solution

The fourth proportional to 680,311.20, 1,020,614.40 and 206,984.28 is: 310,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,311.20 : 1,020,614.40 = 206,984.28 : x
  2. Step 2: Convert to fraction form
    680,311.20/1,020,614.40 = 206,984.28/x
  3. Step 3: Cross multiply
    680,311.20x = 1,020,614.40 × 206,984.28
  4. Step 4: Simplify right side
    680,311.20x = 211,251,136,741.63
  5. Step 5: Solve for x
    x = 211,251,136,741.63/680,311.20
  6. Step 6: Final answer
    x = 310,521.33

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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.