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Finding the Fourth Proportional to 1,320,851.86, 1,822,968.12 and 740,114.26

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Solution

The fourth proportional to 1,320,851.86, 1,822,968.12 and 740,114.26 is: 1,021,465.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,851.86 : 1,822,968.12 = 740,114.26 : x
  2. Step 2: Convert to fraction form
    1,320,851.86/1,822,968.12 = 740,114.26/x
  3. Step 3: Cross multiply
    1,320,851.86x = 1,822,968.12 × 740,114.26
  4. Step 4: Simplify right side
    1,320,851.86x = 1,349,204,701,137.39
  5. Step 5: Solve for x
    x = 1,349,204,701,137.39/1,320,851.86
  6. Step 6: Final answer
    x = 1,021,465.57

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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.