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Finding the Fourth Proportional to 722,300.44, 995,829.39 and 621,409.67

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Solution

The fourth proportional to 722,300.44, 995,829.39 and 621,409.67 is: 856,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,300.44 : 995,829.39 = 621,409.67 : x
  2. Step 2: Convert to fraction form
    722,300.44/995,829.39 = 621,409.67/x
  3. Step 3: Cross multiply
    722,300.44x = 995,829.39 × 621,409.67
  4. Step 4: Simplify right side
    722,300.44x = 618,818,016,972.96
  5. Step 5: Solve for x
    x = 618,818,016,972.96/722,300.44
  6. Step 6: Final answer
    x = 856,732.16

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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.