Home / 921,361.72-1,382,239.40-322,342.40

Finding the Fourth Proportional to 921,361.72, 1,382,239.40 and 322,342.40

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Solution

The fourth proportional to 921,361.72, 1,382,239.40 and 322,342.40 is: 483,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,361.72 : 1,382,239.40 = 322,342.40 : x
  2. Step 2: Convert to fraction form
    921,361.72/1,382,239.40 = 322,342.40/x
  3. Step 3: Cross multiply
    921,361.72x = 1,382,239.40 × 322,342.40
  4. Step 4: Simplify right side
    921,361.72x = 445,554,365,570.56
  5. Step 5: Solve for x
    x = 445,554,365,570.56/921,361.72
  6. Step 6: Final answer
    x = 483,582.46

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1.5x scale

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.