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Finding the Fourth Proportional to 1,295,682.50, 1,787,929.77 and 836,817.10

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Solution

The fourth proportional to 1,295,682.50, 1,787,929.77 and 836,817.10 is: 1,154,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,682.50 : 1,787,929.77 = 836,817.10 : x
  2. Step 2: Convert to fraction form
    1,295,682.50/1,787,929.77 = 836,817.10/x
  3. Step 3: Cross multiply
    1,295,682.50x = 1,787,929.77 × 836,817.10
  4. Step 4: Simplify right side
    1,295,682.50x = 1,496,170,205,135.07
  5. Step 5: Solve for x
    x = 1,496,170,205,135.07/1,295,682.50
  6. Step 6: Final answer
    x = 1,154,735.21

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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.