Home / 1,078,635.77-1,618,571.85-438,821.43

Finding the Fourth Proportional to 1,078,635.77, 1,618,571.85 and 438,821.43

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Solution

The fourth proportional to 1,078,635.77, 1,618,571.85 and 438,821.43 is: 658,483.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,635.77 : 1,618,571.85 = 438,821.43 : x
  2. Step 2: Convert to fraction form
    1,078,635.77/1,618,571.85 = 438,821.43/x
  3. Step 3: Cross multiply
    1,078,635.77x = 1,618,571.85 × 438,821.43
  4. Step 4: Simplify right side
    1,078,635.77x = 710,264,013,774.75
  5. Step 5: Solve for x
    x = 710,264,013,774.75/1,078,635.77
  6. Step 6: Final answer
    x = 658,483.65

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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.