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Finding the Fourth Proportional to 1,971,409.20, 2,956,422.60 and 1,024,465.20

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Solution

The fourth proportional to 1,971,409.20, 2,956,422.60 and 1,024,465.20 is: 1,536,338.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,409.20 : 2,956,422.60 = 1,024,465.20 : x
  2. Step 2: Convert to fraction form
    1,971,409.20/2,956,422.60 = 1,024,465.20/x
  3. Step 3: Cross multiply
    1,971,409.20x = 2,956,422.60 × 1,024,465.20
  4. Step 4: Simplify right side
    1,971,409.20x = 3,028,752,070,193.52
  5. Step 5: Solve for x
    x = 3,028,752,070,193.52/1,971,409.20
  6. Step 6: Final answer
    x = 1,536,338.61

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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.