Home / 2,158,136.70-2,978,228.18-1,191,266.74

Finding the Fourth Proportional to 2,158,136.70, 2,978,228.18 and 1,191,266.74

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Solution

The fourth proportional to 2,158,136.70, 2,978,228.18 and 1,191,266.74 is: 1,643,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,136.70 : 2,978,228.18 = 1,191,266.74 : x
  2. Step 2: Convert to fraction form
    2,158,136.70/2,978,228.18 = 1,191,266.74/x
  3. Step 3: Cross multiply
    2,158,136.70x = 2,978,228.18 × 1,191,266.74
  4. Step 4: Simplify right side
    2,158,136.70x = 3,547,864,174,964.73
  5. Step 5: Solve for x
    x = 3,547,864,174,964.73/2,158,136.70
  6. Step 6: Final answer
    x = 1,643,947.84

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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.