Home / 512,981.04-707,916.06-280,412.73

Finding the Fourth Proportional to 512,981.04, 707,916.06 and 280,412.73

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Solution

The fourth proportional to 512,981.04, 707,916.06 and 280,412.73 is: 386,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,981.04 : 707,916.06 = 280,412.73 : x
  2. Step 2: Convert to fraction form
    512,981.04/707,916.06 = 280,412.73/x
  3. Step 3: Cross multiply
    512,981.04x = 707,916.06 × 280,412.73
  4. Step 4: Simplify right side
    512,981.04x = 198,508,674,995.44
  5. Step 5: Solve for x
    x = 198,508,674,995.44/512,981.04
  6. Step 6: Final answer
    x = 386,970.78

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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.