Home / 878,461.37-1,212,268.21-491,272.50

Finding the Fourth Proportional to 878,461.37, 1,212,268.21 and 491,272.50

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Solution

The fourth proportional to 878,461.37, 1,212,268.21 and 491,272.50 is: 677,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,461.37 : 1,212,268.21 = 491,272.50 : x
  2. Step 2: Convert to fraction form
    878,461.37/1,212,268.21 = 491,272.50/x
  3. Step 3: Cross multiply
    878,461.37x = 1,212,268.21 × 491,272.50
  4. Step 4: Simplify right side
    878,461.37x = 595,554,031,740.86
  5. Step 5: Solve for x
    x = 595,554,031,740.86/878,461.37
  6. Step 6: Final answer
    x = 677,951.30

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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.