Home / 405,961.20-608,941.80-125,564.40

Finding the Fourth Proportional to 405,961.20, 608,941.80 and 125,564.40

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Solution

The fourth proportional to 405,961.20, 608,941.80 and 125,564.40 is: 188,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,961.20 : 608,941.80 = 125,564.40 : x
  2. Step 2: Convert to fraction form
    405,961.20/608,941.80 = 125,564.40/x
  3. Step 3: Cross multiply
    405,961.20x = 608,941.80 × 125,564.40
  4. Step 4: Simplify right side
    405,961.20x = 76,461,411,751.92
  5. Step 5: Solve for x
    x = 76,461,411,751.92/405,961.20
  6. Step 6: Final answer
    x = 188,346.60

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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.