Home / 500,412,873.31-690,575,382.57-285,859,932.42

Finding the Fourth Proportional to 500,412,873.31, 690,575,382.57 and 285,859,932.42

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Solution

The fourth proportional to 500,412,873.31, 690,575,382.57 and 285,859,932.42 is: 394,489,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,412,873.31 : 690,575,382.57 = 285,859,932.42 : x
  2. Step 2: Convert to fraction form
    500,412,873.31/690,575,382.57 = 285,859,932.42/x
  3. Step 3: Cross multiply
    500,412,873.31x = 690,575,382.57 × 285,859,932.42
  4. Step 4: Simplify right side
    500,412,873.31x = 197,407,832,192,152,416
  5. Step 5: Solve for x
    x = 197,407,832,192,152,416/500,412,873.31
  6. Step 6: Final answer
    x = 394,489,915.67

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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.