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Finding the Fourth Proportional to 702,111.72, 968,912.06 and 379,821.72

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Solution

The fourth proportional to 702,111.72, 968,912.06 and 379,821.72 is: 524,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,111.72 : 968,912.06 = 379,821.72 : x
  2. Step 2: Convert to fraction form
    702,111.72/968,912.06 = 379,821.72/x
  3. Step 3: Cross multiply
    702,111.72x = 968,912.06 × 379,821.72
  4. Step 4: Simplify right side
    702,111.72x = 368,013,845,681.12
  5. Step 5: Solve for x
    x = 368,013,845,681.12/702,111.72
  6. Step 6: Final answer
    x = 524,152.83

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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.