Home / 817,100.97-1,225,848.28-256,135.47

Finding the Fourth Proportional to 817,100.97, 1,225,848.28 and 256,135.47

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Solution

The fourth proportional to 817,100.97, 1,225,848.28 and 256,135.47 is: 384,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,100.97 : 1,225,848.28 = 256,135.47 : x
  2. Step 2: Convert to fraction form
    817,100.97/1,225,848.28 = 256,135.47/x
  3. Step 3: Cross multiply
    817,100.97x = 1,225,848.28 × 256,135.47
  4. Step 4: Simplify right side
    817,100.97x = 313,983,225,346.49
  5. Step 5: Solve for x
    x = 313,983,225,346.49/817,100.97
  6. Step 6: Final answer
    x = 384,264.90

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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.