Home / 692,879.76-1,039,664.16-389,085.12

Finding the Fourth Proportional to 692,879.76, 1,039,664.16 and 389,085.12

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Solution

The fourth proportional to 692,879.76, 1,039,664.16 and 389,085.12 is: 583,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,879.76 : 1,039,664.16 = 389,085.12 : x
  2. Step 2: Convert to fraction form
    692,879.76/1,039,664.16 = 389,085.12/x
  3. Step 3: Cross multiply
    692,879.76x = 1,039,664.16 × 389,085.12
  4. Step 4: Simplify right side
    692,879.76x = 404,517,854,453.30
  5. Step 5: Solve for x
    x = 404,517,854,453.30/692,879.76
  6. Step 6: Final answer
    x = 583,821.14

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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.