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Finding the Fourth Proportional to 891,894.86, 1,230,808.47 and 483,986.42

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Solution

The fourth proportional to 891,894.86, 1,230,808.47 and 483,986.42 is: 667,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,894.86 : 1,230,808.47 = 483,986.42 : x
  2. Step 2: Convert to fraction form
    891,894.86/1,230,808.47 = 483,986.42/x
  3. Step 3: Cross multiply
    891,894.86x = 1,230,808.47 × 483,986.42
  4. Step 4: Simplify right side
    891,894.86x = 595,694,585,100.98
  5. Step 5: Solve for x
    x = 595,694,585,100.98/891,894.86
  6. Step 6: Final answer
    x = 667,897.77

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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.