Home / 679,332.42-1,019,173.59-258,378.66

Finding the Fourth Proportional to 679,332.42, 1,019,173.59 and 258,378.66

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Solution

The fourth proportional to 679,332.42, 1,019,173.59 and 258,378.66 is: 387,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,332.42 : 1,019,173.59 = 258,378.66 : x
  2. Step 2: Convert to fraction form
    679,332.42/1,019,173.59 = 258,378.66/x
  3. Step 3: Cross multiply
    679,332.42x = 1,019,173.59 × 258,378.66
  4. Step 4: Simplify right side
    679,332.42x = 263,332,706,491.59
  5. Step 5: Solve for x
    x = 263,332,706,491.59/679,332.42
  6. Step 6: Final answer
    x = 387,634.53

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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.