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Finding the Fourth Proportional to 1,315,483.22, 1,961,064.95 and 1,294,753.28

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Solution

The fourth proportional to 1,315,483.22, 1,961,064.95 and 1,294,753.28 is: 1,930,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,483.22 : 1,961,064.95 = 1,294,753.28 : x
  2. Step 2: Convert to fraction form
    1,315,483.22/1,961,064.95 = 1,294,753.28/x
  3. Step 3: Cross multiply
    1,315,483.22x = 1,961,064.95 × 1,294,753.28
  4. Step 4: Simplify right side
    1,315,483.22x = 2,539,095,260,026.44
  5. Step 5: Solve for x
    x = 2,539,095,260,026.44/1,315,483.22
  6. Step 6: Final answer
    x = 1,930,161.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.