Home / 1,395,237.60-2,092,856.40-685,720.80

Finding the Fourth Proportional to 1,395,237.60, 2,092,856.40 and 685,720.80

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Solution

The fourth proportional to 1,395,237.60, 2,092,856.40 and 685,720.80 is: 1,028,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,237.60 : 2,092,856.40 = 685,720.80 : x
  2. Step 2: Convert to fraction form
    1,395,237.60/2,092,856.40 = 685,720.80/x
  3. Step 3: Cross multiply
    1,395,237.60x = 2,092,856.40 × 685,720.80
  4. Step 4: Simplify right side
    1,395,237.60x = 1,435,115,164,893.12
  5. Step 5: Solve for x
    x = 1,435,115,164,893.12/1,395,237.60
  6. Step 6: Final answer
    x = 1,028,581.20

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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.