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Finding the Fourth Proportional to 886,389, 1,223,220.06 and 483,981

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Solution

The fourth proportional to 886,389, 1,223,220.06 and 483,981 is: 667,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,389 : 1,223,220.06 = 483,981 : x
  2. Step 2: Convert to fraction form
    886,389/1,223,220.06 = 483,981/x
  3. Step 3: Cross multiply
    886,389x = 1,223,220.06 × 483,981
  4. Step 4: Simplify right side
    886,389x = 592,015,267,858.86
  5. Step 5: Solve for x
    x = 592,015,267,858.86/886,389
  6. Step 6: Final answer
    x = 667,895.55

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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.