Home / 513,783,243-709,021,245.24-278,833,842.72

Finding the Fourth Proportional to 513,783,243, 709,021,245.24 and 278,833,842.72

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Solution

The fourth proportional to 513,783,243, 709,021,245.24 and 278,833,842.72 is: 384,790,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,783,243 : 709,021,245.24 = 278,833,842.72 : x
  2. Step 2: Convert to fraction form
    513,783,243/709,021,245.24 = 278,833,842.72/x
  3. Step 3: Cross multiply
    513,783,243x = 709,021,245.24 × 278,833,842.72
  4. Step 4: Simplify right side
    513,783,243x = 197,699,118,380,388,736
  5. Step 5: Solve for x
    x = 197,699,118,380,388,736/513,783,243
  6. Step 6: Final answer
    x = 384,790,903.70

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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.