Home / 1,447,808.40-2,171,712.60-1,288,376.10

Finding the Fourth Proportional to 1,447,808.40, 2,171,712.60 and 1,288,376.10

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Solution

The fourth proportional to 1,447,808.40, 2,171,712.60 and 1,288,376.10 is: 1,932,564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447,808.40 : 2,171,712.60 = 1,288,376.10 : x
  2. Step 2: Convert to fraction form
    1,447,808.40/2,171,712.60 = 1,288,376.10/x
  3. Step 3: Cross multiply
    1,447,808.40x = 2,171,712.60 × 1,288,376.10
  4. Step 4: Simplify right side
    1,447,808.40x = 2,797,982,609,908.86
  5. Step 5: Solve for x
    x = 2,797,982,609,908.86/1,447,808.40
  6. Step 6: Final answer
    x = 1,932,564.15

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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.