Home / 1,339,819.60-2,009,729.40-808,378.60

Finding the Fourth Proportional to 1,339,819.60, 2,009,729.40 and 808,378.60

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Solution

The fourth proportional to 1,339,819.60, 2,009,729.40 and 808,378.60 is: 1,212,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,819.60 : 2,009,729.40 = 808,378.60 : x
  2. Step 2: Convert to fraction form
    1,339,819.60/2,009,729.40 = 808,378.60/x
  3. Step 3: Cross multiply
    1,339,819.60x = 2,009,729.40 × 808,378.60
  4. Step 4: Simplify right side
    1,339,819.60x = 1,624,622,238,750.84
  5. Step 5: Solve for x
    x = 1,624,622,238,750.84/1,339,819.60
  6. Step 6: Final answer
    x = 1,212,567.90

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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.