Home / 679,921.94-1,019,422.83-380,609.12

Finding the Fourth Proportional to 679,921.94, 1,019,422.83 and 380,609.12

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Solution

The fourth proportional to 679,921.94, 1,019,422.83 and 380,609.12 is: 570,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,921.94 : 1,019,422.83 = 380,609.12 : x
  2. Step 2: Convert to fraction form
    679,921.94/1,019,422.83 = 380,609.12/x
  3. Step 3: Cross multiply
    679,921.94x = 1,019,422.83 × 380,609.12
  4. Step 4: Simplify right side
    679,921.94x = 388,001,626,234.21
  5. Step 5: Solve for x
    x = 388,001,626,234.21/679,921.94
  6. Step 6: Final answer
    x = 570,656.13

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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.