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Finding the Fourth Proportional to 550,811.80, 825,140.58 and 380,007.10

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Solution

The fourth proportional to 550,811.80, 825,140.58 and 380,007.10 is: 569,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,811.80 : 825,140.58 = 380,007.10 : x
  2. Step 2: Convert to fraction form
    550,811.80/825,140.58 = 380,007.10/x
  3. Step 3: Cross multiply
    550,811.80x = 825,140.58 × 380,007.10
  4. Step 4: Simplify right side
    550,811.80x = 313,559,278,898.12
  5. Step 5: Solve for x
    x = 313,559,278,898.12/550,811.80
  6. Step 6: Final answer
    x = 569,267.54

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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.