Home / 1,918,138.60-2,878,763.10-1,855,930.60

Finding the Fourth Proportional to 1,918,138.60, 2,878,763.10 and 1,855,930.60

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Solution

The fourth proportional to 1,918,138.60, 2,878,763.10 and 1,855,930.60 is: 2,785,400.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,138.60 : 2,878,763.10 = 1,855,930.60 : x
  2. Step 2: Convert to fraction form
    1,918,138.60/2,878,763.10 = 1,855,930.60/x
  3. Step 3: Cross multiply
    1,918,138.60x = 2,878,763.10 × 1,855,930.60
  4. Step 4: Simplify right side
    1,918,138.60x = 5,342,784,527,440.86
  5. Step 5: Solve for x
    x = 5,342,784,527,440.86/1,918,138.60
  6. Step 6: Final answer
    x = 2,785,400.66

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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.