Home / 1,285,684.61-1,919,138.93-1,192,018.13

Finding the Fourth Proportional to 1,285,684.61, 1,919,138.93 and 1,192,018.13

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Solution

The fourth proportional to 1,285,684.61, 1,919,138.93 and 1,192,018.13 is: 1,779,323.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,684.61 : 1,919,138.93 = 1,192,018.13 : x
  2. Step 2: Convert to fraction form
    1,285,684.61/1,919,138.93 = 1,192,018.13/x
  3. Step 3: Cross multiply
    1,285,684.61x = 1,919,138.93 × 1,192,018.13
  4. Step 4: Simplify right side
    1,285,684.61x = 2,287,648,391,933.15
  5. Step 5: Solve for x
    x = 2,287,648,391,933.15/1,285,684.61
  6. Step 6: Final answer
    x = 1,779,323.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.