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Finding the Fourth Proportional to 945,620.80, 1,279,076.40 and 945,620.80

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Solution

The fourth proportional to 945,620.80, 1,279,076.40 and 945,620.80 is: 1,279,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,620.80 : 1,279,076.40 = 945,620.80 : x
  2. Step 2: Convert to fraction form
    945,620.80/1,279,076.40 = 945,620.80/x
  3. Step 3: Cross multiply
    945,620.80x = 1,279,076.40 × 945,620.80
  4. Step 4: Simplify right side
    945,620.80x = 1,209,521,248,629.12
  5. Step 5: Solve for x
    x = 1,209,521,248,629.12/945,620.80
  6. Step 6: Final answer
    x = 1,279,076.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.