Home / 2,128,291.20-3,192,436.80-1,330,473.60

Finding the Fourth Proportional to 2,128,291.20, 3,192,436.80 and 1,330,473.60

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Solution

The fourth proportional to 2,128,291.20, 3,192,436.80 and 1,330,473.60 is: 1,995,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,291.20 : 3,192,436.80 = 1,330,473.60 : x
  2. Step 2: Convert to fraction form
    2,128,291.20/3,192,436.80 = 1,330,473.60/x
  3. Step 3: Cross multiply
    2,128,291.20x = 3,192,436.80 × 1,330,473.60
  4. Step 4: Simplify right side
    2,128,291.20x = 4,247,452,882,068.48
  5. Step 5: Solve for x
    x = 4,247,452,882,068.48/2,128,291.20
  6. Step 6: Final answer
    x = 1,995,710.40

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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.