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Finding the Fourth Proportional to 886,797.12, 1,330,392.40 and 255,661.68

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Solution

The fourth proportional to 886,797.12, 1,330,392.40 and 255,661.68 is: 383,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,797.12 : 1,330,392.40 = 255,661.68 : x
  2. Step 2: Convert to fraction form
    886,797.12/1,330,392.40 = 255,661.68/x
  3. Step 3: Cross multiply
    886,797.12x = 1,330,392.40 × 255,661.68
  4. Step 4: Simplify right side
    886,797.12x = 340,130,356,043.23
  5. Step 5: Solve for x
    x = 340,130,356,043.23/886,797.12
  6. Step 6: Final answer
    x = 383,549.23

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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.