Home / 1,158,821.20-1,738,231.80-782,808.40

Finding the Fourth Proportional to 1,158,821.20, 1,738,231.80 and 782,808.40

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Solution

The fourth proportional to 1,158,821.20, 1,738,231.80 and 782,808.40 is: 1,174,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158,821.20 : 1,738,231.80 = 782,808.40 : x
  2. Step 2: Convert to fraction form
    1,158,821.20/1,738,231.80 = 782,808.40/x
  3. Step 3: Cross multiply
    1,158,821.20x = 1,738,231.80 × 782,808.40
  4. Step 4: Simplify right side
    1,158,821.20x = 1,360,702,454,187.12
  5. Step 5: Solve for x
    x = 1,360,702,454,187.12/1,158,821.20
  6. Step 6: Final answer
    x = 1,174,212.60

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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.