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Finding the Fourth Proportional to 864,903.71, 1,297,479.38 and 265,915.16

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Solution

The fourth proportional to 864,903.71, 1,297,479.38 and 265,915.16 is: 398,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,903.71 : 1,297,479.38 = 265,915.16 : x
  2. Step 2: Convert to fraction form
    864,903.71/1,297,479.38 = 265,915.16/x
  3. Step 3: Cross multiply
    864,903.71x = 1,297,479.38 × 265,915.16
  4. Step 4: Simplify right side
    864,903.71x = 345,019,433,977.98
  5. Step 5: Solve for x
    x = 345,019,433,977.98/864,903.71
  6. Step 6: Final answer
    x = 398,910.81

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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.