Home / 812,709.45-1,217,314.58-672,741.45

Finding the Fourth Proportional to 812,709.45, 1,217,314.58 and 672,741.45

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Solution

The fourth proportional to 812,709.45, 1,217,314.58 and 672,741.45 is: 1,007,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,709.45 : 1,217,314.58 = 672,741.45 : x
  2. Step 2: Convert to fraction form
    812,709.45/1,217,314.58 = 672,741.45/x
  3. Step 3: Cross multiply
    812,709.45x = 1,217,314.58 × 672,741.45
  4. Step 4: Simplify right side
    812,709.45x = 818,937,972,291.63
  5. Step 5: Solve for x
    x = 818,937,972,291.63/812,709.45
  6. Step 6: Final answer
    x = 1,007,663.90

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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.