Home / 1,390,336.40-2,085,504.60-492,791.60

Finding the Fourth Proportional to 1,390,336.40, 2,085,504.60 and 492,791.60

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Solution

The fourth proportional to 1,390,336.40, 2,085,504.60 and 492,791.60 is: 739,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,336.40 : 2,085,504.60 = 492,791.60 : x
  2. Step 2: Convert to fraction form
    1,390,336.40/2,085,504.60 = 492,791.60/x
  3. Step 3: Cross multiply
    1,390,336.40x = 2,085,504.60 × 492,791.60
  4. Step 4: Simplify right side
    1,390,336.40x = 1,027,719,148,641.36
  5. Step 5: Solve for x
    x = 1,027,719,148,641.36/1,390,336.40
  6. Step 6: Final answer
    x = 739,187.40

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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.