Home / 2,158,135.82-2,978,226.98-1,191,265.85

Finding the Fourth Proportional to 2,158,135.82, 2,978,226.98 and 1,191,265.85

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Solution

The fourth proportional to 2,158,135.82, 2,978,226.98 and 1,191,265.85 is: 1,643,946.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,135.82 : 2,978,226.98 = 1,191,265.85 : x
  2. Step 2: Convert to fraction form
    2,158,135.82/2,978,226.98 = 1,191,265.85/x
  3. Step 3: Cross multiply
    2,158,135.82x = 2,978,226.98 × 1,191,265.85
  4. Step 4: Simplify right side
    2,158,135.82x = 3,547,860,094,822.63
  5. Step 5: Solve for x
    x = 3,547,860,094,822.63/2,158,135.82
  6. Step 6: Final answer
    x = 1,643,946.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.