Home / 3,128,010.40-4,692,015.60-1,330,442.20

Finding the Fourth Proportional to 3,128,010.40, 4,692,015.60 and 1,330,442.20

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Solution

The fourth proportional to 3,128,010.40, 4,692,015.60 and 1,330,442.20 is: 1,995,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,010.40 : 4,692,015.60 = 1,330,442.20 : x
  2. Step 2: Convert to fraction form
    3,128,010.40/4,692,015.60 = 1,330,442.20/x
  3. Step 3: Cross multiply
    3,128,010.40x = 4,692,015.60 × 1,330,442.20
  4. Step 4: Simplify right side
    3,128,010.40x = 6,242,455,557,298.32
  5. Step 5: Solve for x
    x = 6,242,455,557,298.32/3,128,010.40
  6. Step 6: Final answer
    x = 1,995,663.30

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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.