Home / 679,758.98-938,113.24-449,920.26

Finding the Fourth Proportional to 679,758.98, 938,113.24 and 449,920.26

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Solution

The fourth proportional to 679,758.98, 938,113.24 and 449,920.26 is: 620,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,758.98 : 938,113.24 = 449,920.26 : x
  2. Step 2: Convert to fraction form
    679,758.98/938,113.24 = 449,920.26/x
  3. Step 3: Cross multiply
    679,758.98x = 938,113.24 × 449,920.26
  4. Step 4: Simplify right side
    679,758.98x = 422,076,152,850.24
  5. Step 5: Solve for x
    x = 422,076,152,850.24/679,758.98
  6. Step 6: Final answer
    x = 620,920.30

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1.5x scale

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.