Home / 1,555,439.80-2,331,738.15-1,317,088.40

Finding the Fourth Proportional to 1,555,439.80, 2,331,738.15 and 1,317,088.40

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Solution

The fourth proportional to 1,555,439.80, 2,331,738.15 and 1,317,088.40 is: 1,974,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,439.80 : 2,331,738.15 = 1,317,088.40 : x
  2. Step 2: Convert to fraction form
    1,555,439.80/2,331,738.15 = 1,317,088.40/x
  3. Step 3: Cross multiply
    1,555,439.80x = 2,331,738.15 × 1,317,088.40
  4. Step 4: Simplify right side
    1,555,439.80x = 3,071,105,269,202.46
  5. Step 5: Solve for x
    x = 3,071,105,269,202.46/1,555,439.80
  6. Step 6: Final answer
    x = 1,974,428.88

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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.