Home / 405,945.20-608,917.80-125,548.40

Finding the Fourth Proportional to 405,945.20, 608,917.80 and 125,548.40

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Solution

The fourth proportional to 405,945.20, 608,917.80 and 125,548.40 is: 188,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,945.20 : 608,917.80 = 125,548.40 : x
  2. Step 2: Convert to fraction form
    405,945.20/608,917.80 = 125,548.40/x
  3. Step 3: Cross multiply
    405,945.20x = 608,917.80 × 125,548.40
  4. Step 4: Simplify right side
    405,945.20x = 76,448,655,521.52
  5. Step 5: Solve for x
    x = 76,448,655,521.52/405,945.20
  6. Step 6: Final answer
    x = 188,322.60

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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.