Home / 1,280,192.32-1,919,843.79-712,439.83

Finding the Fourth Proportional to 1,280,192.32, 1,919,843.79 and 712,439.83

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Solution

The fourth proportional to 1,280,192.32, 1,919,843.79 and 712,439.83 is: 1,068,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,192.32 : 1,919,843.79 = 712,439.83 : x
  2. Step 2: Convert to fraction form
    1,280,192.32/1,919,843.79 = 712,439.83/x
  3. Step 3: Cross multiply
    1,280,192.32x = 1,919,843.79 × 712,439.83
  4. Step 4: Simplify right side
    1,280,192.32x = 1,367,773,183,374.16
  5. Step 5: Solve for x
    x = 1,367,773,183,374.16/1,280,192.32
  6. Step 6: Final answer
    x = 1,068,412.27

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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.