Home / 1,078,636.78-1,618,573.35-438,822.43

Finding the Fourth Proportional to 1,078,636.78, 1,618,573.35 and 438,822.43

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Solution

The fourth proportional to 1,078,636.78, 1,618,573.35 and 438,822.43 is: 658,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,636.78 : 1,618,573.35 = 438,822.43 : x
  2. Step 2: Convert to fraction form
    1,078,636.78/1,618,573.35 = 438,822.43/x
  3. Step 3: Cross multiply
    1,078,636.78x = 1,618,573.35 × 438,822.43
  4. Step 4: Simplify right side
    1,078,636.78x = 710,266,290,580.24
  5. Step 5: Solve for x
    x = 710,266,290,580.24/1,078,636.78
  6. Step 6: Final answer
    x = 658,485.14

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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.