Home / 405,986.40-608,979.60-106,466.40

Finding the Fourth Proportional to 405,986.40, 608,979.60 and 106,466.40

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Solution

The fourth proportional to 405,986.40, 608,979.60 and 106,466.40 is: 159,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,986.40 : 608,979.60 = 106,466.40 : x
  2. Step 2: Convert to fraction form
    405,986.40/608,979.60 = 106,466.40/x
  3. Step 3: Cross multiply
    405,986.40x = 608,979.60 × 106,466.40
  4. Step 4: Simplify right side
    405,986.40x = 64,835,865,685.44
  5. Step 5: Solve for x
    x = 64,835,865,685.44/405,986.40
  6. Step 6: Final answer
    x = 159,699.60

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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.