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Finding the Fourth Proportional to 691,396.88, 954,093.48 and 389,610.32

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Solution

The fourth proportional to 691,396.88, 954,093.48 and 389,610.32 is: 537,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,396.88 : 954,093.48 = 389,610.32 : x
  2. Step 2: Convert to fraction form
    691,396.88/954,093.48 = 389,610.32/x
  3. Step 3: Cross multiply
    691,396.88x = 954,093.48 × 389,610.32
  4. Step 4: Simplify right side
    691,396.88x = 371,724,666,052.71
  5. Step 5: Solve for x
    x = 371,724,666,052.71/691,396.88
  6. Step 6: Final answer
    x = 537,642.96

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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.