Home / 2,578,036.40-3,867,251.40-781,068.70

Finding the Fourth Proportional to 2,578,036.40, 3,867,251.40 and 781,068.70

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Solution

The fourth proportional to 2,578,036.40, 3,867,251.40 and 781,068.70 is: 1,171,662.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578,036.40 : 3,867,251.40 = 781,068.70 : x
  2. Step 2: Convert to fraction form
    2,578,036.40/3,867,251.40 = 781,068.70/x
  3. Step 3: Cross multiply
    2,578,036.40x = 3,867,251.40 × 781,068.70
  4. Step 4: Simplify right side
    2,578,036.40x = 3,020,589,023,571.18
  5. Step 5: Solve for x
    x = 3,020,589,023,571.18/2,578,036.40
  6. Step 6: Final answer
    x = 1,171,662.67

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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.