Home / 1,189,407.56-1,784,297.25-390,507.39

Finding the Fourth Proportional to 1,189,407.56, 1,784,297.25 and 390,507.39

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Solution

The fourth proportional to 1,189,407.56, 1,784,297.25 and 390,507.39 is: 585,822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,407.56 : 1,784,297.25 = 390,507.39 : x
  2. Step 2: Convert to fraction form
    1,189,407.56/1,784,297.25 = 390,507.39/x
  3. Step 3: Cross multiply
    1,189,407.56x = 1,784,297.25 × 390,507.39
  4. Step 4: Simplify right side
    1,189,407.56x = 696,781,262,081.68
  5. Step 5: Solve for x
    x = 696,781,262,081.68/1,189,407.56
  6. Step 6: Final answer
    x = 585,822.13

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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.