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Finding the Fourth Proportional to 691,860.60, 954,765.96 and 390,052.44

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Solution

The fourth proportional to 691,860.60, 954,765.96 and 390,052.44 is: 538,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,860.60 : 954,765.96 = 390,052.44 : x
  2. Step 2: Convert to fraction form
    691,860.60/954,765.96 = 390,052.44/x
  3. Step 3: Cross multiply
    691,860.60x = 954,765.96 × 390,052.44
  4. Step 4: Simplify right side
    691,860.60x = 372,408,792,326.94
  5. Step 5: Solve for x
    x = 372,408,792,326.94/691,860.60
  6. Step 6: Final answer
    x = 538,271.43

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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.