Home / 855,910.80-1,283,931.81-256,828.32

Finding the Fourth Proportional to 855,910.80, 1,283,931.81 and 256,828.32

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Solution

The fourth proportional to 855,910.80, 1,283,931.81 and 256,828.32 is: 385,262.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,910.80 : 1,283,931.81 = 256,828.32 : x
  2. Step 2: Convert to fraction form
    855,910.80/1,283,931.81 = 256,828.32/x
  3. Step 3: Cross multiply
    855,910.80x = 1,283,931.81 × 256,828.32
  4. Step 4: Simplify right side
    855,910.80x = 329,750,049,756.86
  5. Step 5: Solve for x
    x = 329,750,049,756.86/855,910.80
  6. Step 6: Final answer
    x = 385,262.17

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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.