Home / 512,645,898.11-707,436,718.85-300,949,324.56

Finding the Fourth Proportional to 512,645,898.11, 707,436,718.85 and 300,949,324.56

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Solution

The fourth proportional to 512,645,898.11, 707,436,718.85 and 300,949,324.56 is: 415,301,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,645,898.11 : 707,436,718.85 = 300,949,324.56 : x
  2. Step 2: Convert to fraction form
    512,645,898.11/707,436,718.85 = 300,949,324.56/x
  3. Step 3: Cross multiply
    512,645,898.11x = 707,436,718.85 × 300,949,324.56
  4. Step 4: Simplify right side
    512,645,898.11x = 212,902,602,707,602,496
  5. Step 5: Solve for x
    x = 212,902,602,707,602,496/512,645,898.11
  6. Step 6: Final answer
    x = 415,301,484.89

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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.