Home / 864,905.21-1,297,481.63-265,916.66

Finding the Fourth Proportional to 864,905.21, 1,297,481.63 and 265,916.66

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Solution

The fourth proportional to 864,905.21, 1,297,481.63 and 265,916.66 is: 398,913.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,905.21 : 1,297,481.63 = 265,916.66 : x
  2. Step 2: Convert to fraction form
    864,905.21/1,297,481.63 = 265,916.66/x
  3. Step 3: Cross multiply
    864,905.21x = 1,297,481.63 × 265,916.66
  4. Step 4: Simplify right side
    864,905.21x = 345,021,973,643.96
  5. Step 5: Solve for x
    x = 345,021,973,643.96/864,905.21
  6. Step 6: Final answer
    x = 398,913.05

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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.