Home / 1,339,779.60-2,009,669.40-1,213,808.40

Finding the Fourth Proportional to 1,339,779.60, 2,009,669.40 and 1,213,808.40

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Solution

The fourth proportional to 1,339,779.60, 2,009,669.40 and 1,213,808.40 is: 1,820,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,779.60 : 2,009,669.40 = 1,213,808.40 : x
  2. Step 2: Convert to fraction form
    1,339,779.60/2,009,669.40 = 1,213,808.40/x
  3. Step 3: Cross multiply
    1,339,779.60x = 2,009,669.40 × 1,213,808.40
  4. Step 4: Simplify right side
    1,339,779.60x = 2,439,353,598,942.96
  5. Step 5: Solve for x
    x = 2,439,353,598,942.96/1,339,779.60
  6. Step 6: Final answer
    x = 1,820,712.60

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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.