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Finding the Fourth Proportional to 1,245,747.60, 1,867,930.20 and 496,947.60

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Solution

The fourth proportional to 1,245,747.60, 1,867,930.20 and 496,947.60 is: 745,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,747.60 : 1,867,930.20 = 496,947.60 : x
  2. Step 2: Convert to fraction form
    1,245,747.60/1,867,930.20 = 496,947.60/x
  3. Step 3: Cross multiply
    1,245,747.60x = 1,867,930.20 × 496,947.60
  4. Step 4: Simplify right side
    1,245,747.60x = 928,263,429,857.52
  5. Step 5: Solve for x
    x = 928,263,429,857.52/1,245,747.60
  6. Step 6: Final answer
    x = 745,145.67

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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.