Home / 1,191,742.40-1,787,138.40-392,801.60

Finding the Fourth Proportional to 1,191,742.40, 1,787,138.40 and 392,801.60

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Solution

The fourth proportional to 1,191,742.40, 1,787,138.40 and 392,801.60 is: 589,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,742.40 : 1,787,138.40 = 392,801.60 : x
  2. Step 2: Convert to fraction form
    1,191,742.40/1,787,138.40 = 392,801.60/x
  3. Step 3: Cross multiply
    1,191,742.40x = 1,787,138.40 × 392,801.60
  4. Step 4: Simplify right side
    1,191,742.40x = 701,990,822,941.44
  5. Step 5: Solve for x
    x = 701,990,822,941.44/1,191,742.40
  6. Step 6: Final answer
    x = 589,045.77

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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.