Home / 1,621,208.32-2,431,955.04-423,121.12

Finding the Fourth Proportional to 1,621,208.32, 2,431,955.04 and 423,121.12

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Solution

The fourth proportional to 1,621,208.32, 2,431,955.04 and 423,121.12 is: 634,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,208.32 : 2,431,955.04 = 423,121.12 : x
  2. Step 2: Convert to fraction form
    1,621,208.32/2,431,955.04 = 423,121.12/x
  3. Step 3: Cross multiply
    1,621,208.32x = 2,431,955.04 × 423,121.12
  4. Step 4: Simplify right side
    1,621,208.32x = 1,029,011,540,314.44
  5. Step 5: Solve for x
    x = 1,029,011,540,314.44/1,621,208.32
  6. Step 6: Final answer
    x = 634,718.89

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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.