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Finding the Fourth Proportional to 391,735.53, 587,603.49 and 258,584.67

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Solution

The fourth proportional to 391,735.53, 587,603.49 and 258,584.67 is: 387,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,735.53 : 587,603.49 = 258,584.67 : x
  2. Step 2: Convert to fraction form
    391,735.53/587,603.49 = 258,584.67/x
  3. Step 3: Cross multiply
    391,735.53x = 587,603.49 × 258,584.67
  4. Step 4: Simplify right side
    391,735.53x = 151,945,254,552.50
  5. Step 5: Solve for x
    x = 151,945,254,552.50/391,735.53
  6. Step 6: Final answer
    x = 387,877.13

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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.