Home / 1,209,128.60-1,667,464.70-750,317.60

Finding the Fourth Proportional to 1,209,128.60, 1,667,464.70 and 750,317.60

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Solution

The fourth proportional to 1,209,128.60, 1,667,464.70 and 750,317.60 is: 1,034,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,128.60 : 1,667,464.70 = 750,317.60 : x
  2. Step 2: Convert to fraction form
    1,209,128.60/1,667,464.70 = 750,317.60/x
  3. Step 3: Cross multiply
    1,209,128.60x = 1,667,464.70 × 750,317.60
  4. Step 4: Simplify right side
    1,209,128.60x = 1,251,128,111,788.72
  5. Step 5: Solve for x
    x = 1,251,128,111,788.72/1,209,128.60
  6. Step 6: Final answer
    x = 1,034,735.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.