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Finding the Fourth Proportional to 888,360, 1,225,936.80 and 485,960.64

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Solution

The fourth proportional to 888,360, 1,225,936.80 and 485,960.64 is: 670,625.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,360 : 1,225,936.80 = 485,960.64 : x
  2. Step 2: Convert to fraction form
    888,360/1,225,936.80 = 485,960.64/x
  3. Step 3: Cross multiply
    888,360x = 1,225,936.80 × 485,960.64
  4. Step 4: Simplify right side
    888,360x = 595,757,031,927.55
  5. Step 5: Solve for x
    x = 595,757,031,927.55/888,360
  6. Step 6: Final answer
    x = 670,625.68

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1.5x scale

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.