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Finding the Fourth Proportional to 1,320,652.22, 1,976,564.32 and 751,880.63

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Solution

The fourth proportional to 1,320,652.22, 1,976,564.32 and 751,880.63 is: 1,125,307.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,652.22 : 1,976,564.32 = 751,880.63 : x
  2. Step 2: Convert to fraction form
    1,320,652.22/1,976,564.32 = 751,880.63/x
  3. Step 3: Cross multiply
    1,320,652.22x = 1,976,564.32 × 751,880.63
  4. Step 4: Simplify right side
    1,320,652.22x = 1,486,140,429,218.83
  5. Step 5: Solve for x
    x = 1,486,140,429,218.83/1,320,652.22
  6. Step 6: Final answer
    x = 1,125,307.94

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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.