Home / 2,158,526.21-2,979,156.11-1,287,416.77

Finding the Fourth Proportional to 2,158,526.21, 2,979,156.11 and 1,287,416.77

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Solution

The fourth proportional to 2,158,526.21, 2,979,156.11 and 1,287,416.77 is: 1,776,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,526.21 : 2,979,156.11 = 1,287,416.77 : x
  2. Step 2: Convert to fraction form
    2,158,526.21/2,979,156.11 = 1,287,416.77/x
  3. Step 3: Cross multiply
    2,158,526.21x = 2,979,156.11 × 1,287,416.77
  4. Step 4: Simplify right side
    2,158,526.21x = 3,835,415,522,576.99
  5. Step 5: Solve for x
    x = 3,835,415,522,576.99/2,158,526.21
  6. Step 6: Final answer
    x = 1,776,867.71

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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.