Home / 1,212,873.40-1,817,779.20-613,999.90

Finding the Fourth Proportional to 1,212,873.40, 1,817,779.20 and 613,999.90

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Solution

The fourth proportional to 1,212,873.40, 1,817,779.20 and 613,999.90 is: 920,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,873.40 : 1,817,779.20 = 613,999.90 : x
  2. Step 2: Convert to fraction form
    1,212,873.40/1,817,779.20 = 613,999.90/x
  3. Step 3: Cross multiply
    1,212,873.40x = 1,817,779.20 × 613,999.90
  4. Step 4: Simplify right side
    1,212,873.40x = 1,116,116,247,022.08
  5. Step 5: Solve for x
    x = 1,116,116,247,022.08/1,212,873.40
  6. Step 6: Final answer
    x = 920,224.85

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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.