Home / 647,579.40-969,625.96-422,381.60

Finding the Fourth Proportional to 647,579.40, 969,625.96 and 422,381.60

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Solution

The fourth proportional to 647,579.40, 969,625.96 and 422,381.60 is: 632,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,579.40 : 969,625.96 = 422,381.60 : x
  2. Step 2: Convert to fraction form
    647,579.40/969,625.96 = 422,381.60/x
  3. Step 3: Cross multiply
    647,579.40x = 969,625.96 × 422,381.60
  4. Step 4: Simplify right side
    647,579.40x = 409,552,164,386.34
  5. Step 5: Solve for x
    x = 409,552,164,386.34/647,579.40
  6. Step 6: Final answer
    x = 632,435.44

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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.