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Finding the Fourth Proportional to 405,989.60, 608,109.60 and 336,005.60

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Solution

The fourth proportional to 405,989.60, 608,109.60 and 336,005.60 is: 503,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,989.60 : 608,109.60 = 336,005.60 : x
  2. Step 2: Convert to fraction form
    405,989.60/608,109.60 = 336,005.60/x
  3. Step 3: Cross multiply
    405,989.60x = 608,109.60 × 336,005.60
  4. Step 4: Simplify right side
    405,989.60x = 204,328,231,013.76
  5. Step 5: Solve for x
    x = 204,328,231,013.76/405,989.60
  6. Step 6: Final answer
    x = 503,284.40

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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.