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Finding the Fourth Proportional to 909,735.30, 1,361,978.55 and 883,491.30

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Solution

The fourth proportional to 909,735.30, 1,361,978.55 and 883,491.30 is: 1,322,688.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,735.30 : 1,361,978.55 = 883,491.30 : x
  2. Step 2: Convert to fraction form
    909,735.30/1,361,978.55 = 883,491.30/x
  3. Step 3: Cross multiply
    909,735.30x = 1,361,978.55 × 883,491.30
  4. Step 4: Simplify right side
    909,735.30x = 1,203,296,199,711.62
  5. Step 5: Solve for x
    x = 1,203,296,199,711.62/909,735.30
  6. Step 6: Final answer
    x = 1,322,688.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.