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Finding the Fourth Proportional to 1,295,576.48, 1,788,468.82 and 836,914.65

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Solution

The fourth proportional to 1,295,576.48, 1,788,468.82 and 836,914.65 is: 1,155,312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,576.48 : 1,788,468.82 = 836,914.65 : x
  2. Step 2: Convert to fraction form
    1,295,576.48/1,788,468.82 = 836,914.65/x
  3. Step 3: Cross multiply
    1,295,576.48x = 1,788,468.82 × 836,914.65
  4. Step 4: Simplify right side
    1,295,576.48x = 1,496,795,756,526.21
  5. Step 5: Solve for x
    x = 1,496,795,756,526.21/1,295,576.48
  6. Step 6: Final answer
    x = 1,155,312.54

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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.