Home / 647,001.12-892,927.98-388,961.60

Finding the Fourth Proportional to 647,001.12, 892,927.98 and 388,961.60

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Solution

The fourth proportional to 647,001.12, 892,927.98 and 388,961.60 is: 536,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,001.12 : 892,927.98 = 388,961.60 : x
  2. Step 2: Convert to fraction form
    647,001.12/892,927.98 = 388,961.60/x
  3. Step 3: Cross multiply
    647,001.12x = 892,927.98 × 388,961.60
  4. Step 4: Simplify right side
    647,001.12x = 347,314,695,785.57
  5. Step 5: Solve for x
    x = 347,314,695,785.57/647,001.12
  6. Step 6: Final answer
    x = 536,806.95

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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.