Home / 1,919,894.40-2,877,217.20-1,278,374.40

Finding the Fourth Proportional to 1,919,894.40, 2,877,217.20 and 1,278,374.40

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Solution

The fourth proportional to 1,919,894.40, 2,877,217.20 and 1,278,374.40 is: 1,915,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,894.40 : 2,877,217.20 = 1,278,374.40 : x
  2. Step 2: Convert to fraction form
    1,919,894.40/2,877,217.20 = 1,278,374.40/x
  3. Step 3: Cross multiply
    1,919,894.40x = 2,877,217.20 × 1,278,374.40
  4. Step 4: Simplify right side
    1,919,894.40x = 3,678,160,811,719.68
  5. Step 5: Solve for x
    x = 3,678,160,811,719.68/1,919,894.40
  6. Step 6: Final answer
    x = 1,915,814.13

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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.