Home / 679,200.30-1,018,800.45-205,824.15

Finding the Fourth Proportional to 679,200.30, 1,018,800.45 and 205,824.15

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Solution

The fourth proportional to 679,200.30, 1,018,800.45 and 205,824.15 is: 308,736.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,200.30 : 1,018,800.45 = 205,824.15 : x
  2. Step 2: Convert to fraction form
    679,200.30/1,018,800.45 = 205,824.15/x
  3. Step 3: Cross multiply
    679,200.30x = 1,018,800.45 × 205,824.15
  4. Step 4: Simplify right side
    679,200.30x = 209,693,736,640.87
  5. Step 5: Solve for x
    x = 209,693,736,640.87/679,200.30
  6. Step 6: Final answer
    x = 308,736.23

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Similar ratio
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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.