Home / 2,708,870.40-4,059,619.20-1,919,980.80

Finding the Fourth Proportional to 2,708,870.40, 4,059,619.20 and 1,919,980.80

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Solution

The fourth proportional to 2,708,870.40, 4,059,619.20 and 1,919,980.80 is: 2,877,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708,870.40 : 4,059,619.20 = 1,919,980.80 : x
  2. Step 2: Convert to fraction form
    2,708,870.40/4,059,619.20 = 1,919,980.80/x
  3. Step 3: Cross multiply
    2,708,870.40x = 4,059,619.20 × 1,919,980.80
  4. Step 4: Simplify right side
    2,708,870.40x = 7,794,390,919,311.36
  5. Step 5: Solve for x
    x = 7,794,390,919,311.36/2,708,870.40
  6. Step 6: Final answer
    x = 2,877,358.37

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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.