Home / 679,815.96-1,019,726.36-305,401.56

Finding the Fourth Proportional to 679,815.96, 1,019,726.36 and 305,401.56

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Solution

The fourth proportional to 679,815.96, 1,019,726.36 and 305,401.56 is: 458,103.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,815.96 : 1,019,726.36 = 305,401.56 : x
  2. Step 2: Convert to fraction form
    679,815.96/1,019,726.36 = 305,401.56/x
  3. Step 3: Cross multiply
    679,815.96x = 1,019,726.36 × 305,401.56
  4. Step 4: Simplify right side
    679,815.96x = 311,426,021,117.12
  5. Step 5: Solve for x
    x = 311,426,021,117.12/679,815.96
  6. Step 6: Final answer
    x = 458,103.43

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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.