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Finding the Fourth Proportional to 622,878.51, 859,515.93 and 350,990.67

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Solution

The fourth proportional to 622,878.51, 859,515.93 and 350,990.67 is: 484,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,878.51 : 859,515.93 = 350,990.67 : x
  2. Step 2: Convert to fraction form
    622,878.51/859,515.93 = 350,990.67/x
  3. Step 3: Cross multiply
    622,878.51x = 859,515.93 × 350,990.67
  4. Step 4: Simplify right side
    622,878.51x = 301,682,072,146.37
  5. Step 5: Solve for x
    x = 301,682,072,146.37/622,878.51
  6. Step 6: Final answer
    x = 484,335.34

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1.5x scale

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.