Home / 285,930,861.12-428,825,432.88-81,460,707.84

Finding the Fourth Proportional to 285,930,861.12, 428,825,432.88 and 81,460,707.84

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Solution

The fourth proportional to 285,930,861.12, 428,825,432.88 and 81,460,707.84 is: 122,170,874.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,930,861.12 : 428,825,432.88 = 81,460,707.84 : x
  2. Step 2: Convert to fraction form
    285,930,861.12/428,825,432.88 = 81,460,707.84/x
  3. Step 3: Cross multiply
    285,930,861.12x = 428,825,432.88 × 81,460,707.84
  4. Step 4: Simplify right side
    285,930,861.12x = 34,932,423,302,199,212
  5. Step 5: Solve for x
    x = 34,932,423,302,199,212/285,930,861.12
  6. Step 6: Final answer
    x = 122,170,874.33

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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.