Home / 1,189,405.06-1,784,293.48-390,504.90

Finding the Fourth Proportional to 1,189,405.06, 1,784,293.48 and 390,504.90

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Solution

The fourth proportional to 1,189,405.06, 1,784,293.48 and 390,504.90 is: 585,818.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,405.06 : 1,784,293.48 = 390,504.90 : x
  2. Step 2: Convert to fraction form
    1,189,405.06/1,784,293.48 = 390,504.90/x
  3. Step 3: Cross multiply
    1,189,405.06x = 1,784,293.48 × 390,504.90
  4. Step 4: Simplify right side
    1,189,405.06x = 696,775,346,978.05
  5. Step 5: Solve for x
    x = 696,775,346,978.05/1,189,405.06
  6. Step 6: Final answer
    x = 585,818.38

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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.