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Finding the Fourth Proportional to 518,005.86, 776,804.58 and 251,687.58

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Solution

The fourth proportional to 518,005.86, 776,804.58 and 251,687.58 is: 377,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,005.86 : 776,804.58 = 251,687.58 : x
  2. Step 2: Convert to fraction form
    518,005.86/776,804.58 = 251,687.58/x
  3. Step 3: Cross multiply
    518,005.86x = 776,804.58 × 251,687.58
  4. Step 4: Simplify right side
    518,005.86x = 195,512,064,873.12
  5. Step 5: Solve for x
    x = 195,512,064,873.12/518,005.86
  6. Step 6: Final answer
    x = 377,432.15

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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.