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Finding the Fourth Proportional to 716,961.37, 989,442.22 and 394,668.04

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Solution

The fourth proportional to 716,961.37, 989,442.22 and 394,668.04 is: 544,661.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,961.37 : 989,442.22 = 394,668.04 : x
  2. Step 2: Convert to fraction form
    716,961.37/989,442.22 = 394,668.04/x
  3. Step 3: Cross multiply
    716,961.37x = 989,442.22 × 394,668.04
  4. Step 4: Simplify right side
    716,961.37x = 390,501,221,660.65
  5. Step 5: Solve for x
    x = 390,501,221,660.65/716,961.37
  6. Step 6: Final answer
    x = 544,661.45

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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.