Home / 2,128,681.48-3,193,442.86-780,856.60

Finding the Fourth Proportional to 2,128,681.48, 3,193,442.86 and 780,856.60

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Solution

The fourth proportional to 2,128,681.48, 3,193,442.86 and 780,856.60 is: 1,171,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,681.48 : 3,193,442.86 = 780,856.60 : x
  2. Step 2: Convert to fraction form
    2,128,681.48/3,193,442.86 = 780,856.60/x
  3. Step 3: Cross multiply
    2,128,681.48x = 3,193,442.86 × 780,856.60
  4. Step 4: Simplify right side
    2,128,681.48x = 2,493,620,933,953.88
  5. Step 5: Solve for x
    x = 2,493,620,933,953.88/2,128,681.48
  6. Step 6: Final answer
    x = 1,171,439.20

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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.