Home / 826,628.40-1,239,942.60-742,647.60

Finding the Fourth Proportional to 826,628.40, 1,239,942.60 and 742,647.60

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Solution

The fourth proportional to 826,628.40, 1,239,942.60 and 742,647.60 is: 1,113,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,628.40 : 1,239,942.60 = 742,647.60 : x
  2. Step 2: Convert to fraction form
    826,628.40/1,239,942.60 = 742,647.60/x
  3. Step 3: Cross multiply
    826,628.40x = 1,239,942.60 × 742,647.60
  4. Step 4: Simplify right side
    826,628.40x = 920,840,396,027.76
  5. Step 5: Solve for x
    x = 920,840,396,027.76/826,628.40
  6. Step 6: Final answer
    x = 1,113,971.40

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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.