Home / 457,811.10-686,716.65-308,511.90

Finding the Fourth Proportional to 457,811.10, 686,716.65 and 308,511.90

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Solution

The fourth proportional to 457,811.10, 686,716.65 and 308,511.90 is: 462,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,811.10 : 686,716.65 = 308,511.90 : x
  2. Step 2: Convert to fraction form
    457,811.10/686,716.65 = 308,511.90/x
  3. Step 3: Cross multiply
    457,811.10x = 686,716.65 × 308,511.90
  4. Step 4: Simplify right side
    457,811.10x = 211,860,258,453.14
  5. Step 5: Solve for x
    x = 211,860,258,453.14/457,811.10
  6. Step 6: Final answer
    x = 462,767.85

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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.