Home / 679,870.96-1,019,057.84-280,292.56

Finding the Fourth Proportional to 679,870.96, 1,019,057.84 and 280,292.56

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Solution

The fourth proportional to 679,870.96, 1,019,057.84 and 280,292.56 is: 420,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,870.96 : 1,019,057.84 = 280,292.56 : x
  2. Step 2: Convert to fraction form
    679,870.96/1,019,057.84 = 280,292.56/x
  3. Step 3: Cross multiply
    679,870.96x = 1,019,057.84 × 280,292.56
  4. Step 4: Simplify right side
    679,870.96x = 285,634,330,761.67
  5. Step 5: Solve for x
    x = 285,634,330,761.67/679,870.96
  6. Step 6: Final answer
    x = 420,130.21

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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.