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Finding the Fourth Proportional to 656,885.16, 906,806.69 and 384,915.32

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Solution

The fourth proportional to 656,885.16, 906,806.69 and 384,915.32 is: 531,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,885.16 : 906,806.69 = 384,915.32 : x
  2. Step 2: Convert to fraction form
    656,885.16/906,806.69 = 384,915.32/x
  3. Step 3: Cross multiply
    656,885.16x = 906,806.69 × 384,915.32
  4. Step 4: Simplify right side
    656,885.16x = 349,043,780,800.88
  5. Step 5: Solve for x
    x = 349,043,780,800.88/656,885.16
  6. Step 6: Final answer
    x = 531,361.95

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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.