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Finding the Fourth Proportional to 678,792.24, 936,735.50 and 376,986.24

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Solution

The fourth proportional to 678,792.24, 936,735.50 and 376,986.24 is: 520,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,792.24 : 936,735.50 = 376,986.24 : x
  2. Step 2: Convert to fraction form
    678,792.24/936,735.50 = 376,986.24/x
  3. Step 3: Cross multiply
    678,792.24x = 936,735.50 × 376,986.24
  4. Step 4: Simplify right side
    678,792.24x = 353,136,394,019.52
  5. Step 5: Solve for x
    x = 353,136,394,019.52/678,792.24
  6. Step 6: Final answer
    x = 520,242.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.