Home / 855,989.82-1,283,981.64-256,948.38

Finding the Fourth Proportional to 855,989.82, 1,283,981.64 and 256,948.38

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Solution

The fourth proportional to 855,989.82, 1,283,981.64 and 256,948.38 is: 385,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,989.82 : 1,283,981.64 = 256,948.38 : x
  2. Step 2: Convert to fraction form
    855,989.82/1,283,981.64 = 256,948.38/x
  3. Step 3: Cross multiply
    855,989.82x = 1,283,981.64 × 256,948.38
  4. Step 4: Simplify right side
    855,989.82x = 329,917,002,347.74
  5. Step 5: Solve for x
    x = 329,917,002,347.74/855,989.82
  6. Step 6: Final answer
    x = 385,421.64

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1.5x scale

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.