Home / 743,361.93-1,025,806.55-421,065.54

Finding the Fourth Proportional to 743,361.93, 1,025,806.55 and 421,065.54

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Solution

The fourth proportional to 743,361.93, 1,025,806.55 and 421,065.54 is: 581,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,361.93 : 1,025,806.55 = 421,065.54 : x
  2. Step 2: Convert to fraction form
    743,361.93/1,025,806.55 = 421,065.54/x
  3. Step 3: Cross multiply
    743,361.93x = 1,025,806.55 × 421,065.54
  4. Step 4: Simplify right side
    743,361.93x = 431,931,786,805.96
  5. Step 5: Solve for x
    x = 431,931,786,805.96/743,361.93
  6. Step 6: Final answer
    x = 581,051.80

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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.