Home / 878,622.37-1,212,611.16-491,459.31

Finding the Fourth Proportional to 878,622.37, 1,212,611.16 and 491,459.31

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Solution

The fourth proportional to 878,622.37, 1,212,611.16 and 491,459.31 is: 678,276.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,622.37 : 1,212,611.16 = 491,459.31 : x
  2. Step 2: Convert to fraction form
    878,622.37/1,212,611.16 = 491,459.31/x
  3. Step 3: Cross multiply
    878,622.37x = 1,212,611.16 × 491,459.31
  4. Step 4: Simplify right side
    878,622.37x = 595,949,039,157.49
  5. Step 5: Solve for x
    x = 595,949,039,157.49/878,622.37
  6. Step 6: Final answer
    x = 678,276.65

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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.