Home / 692,297.20-1,038,518.72-287,443.44

Finding the Fourth Proportional to 692,297.20, 1,038,518.72 and 287,443.44

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Solution

The fourth proportional to 692,297.20, 1,038,518.72 and 287,443.44 is: 431,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,297.20 : 1,038,518.72 = 287,443.44 : x
  2. Step 2: Convert to fraction form
    692,297.20/1,038,518.72 = 287,443.44/x
  3. Step 3: Cross multiply
    692,297.20x = 1,038,518.72 × 287,443.44
  4. Step 4: Simplify right side
    692,297.20x = 298,515,393,381.20
  5. Step 5: Solve for x
    x = 298,515,393,381.20/692,297.20
  6. Step 6: Final answer
    x = 431,195.44

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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.