Home / 2,171,315.20-3,258,139.20-909,270.40

Finding the Fourth Proportional to 2,171,315.20, 3,258,139.20 and 909,270.40

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Solution

The fourth proportional to 2,171,315.20, 3,258,139.20 and 909,270.40 is: 1,364,394.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171,315.20 : 3,258,139.20 = 909,270.40 : x
  2. Step 2: Convert to fraction form
    2,171,315.20/3,258,139.20 = 909,270.40/x
  3. Step 3: Cross multiply
    2,171,315.20x = 3,258,139.20 × 909,270.40
  4. Step 4: Simplify right side
    2,171,315.20x = 2,962,529,533,639.68
  5. Step 5: Solve for x
    x = 2,962,529,533,639.68/2,171,315.20
  6. Step 6: Final answer
    x = 1,364,394.05

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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.