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Finding the Fourth Proportional to 518,811.10, 776,987.85 and 351,694.30

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Solution

The fourth proportional to 518,811.10, 776,987.85 and 351,694.30 is: 526,708.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,811.10 : 776,987.85 = 351,694.30 : x
  2. Step 2: Convert to fraction form
    518,811.10/776,987.85 = 351,694.30/x
  3. Step 3: Cross multiply
    518,811.10x = 776,987.85 × 351,694.30
  4. Step 4: Simplify right side
    518,811.10x = 273,262,198,014.26
  5. Step 5: Solve for x
    x = 273,262,198,014.26/518,811.10
  6. Step 6: Final answer
    x = 526,708.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.