Home / 626,579.45-864,531.40-354,647.31

Finding the Fourth Proportional to 626,579.45, 864,531.40 and 354,647.31

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Solution

The fourth proportional to 626,579.45, 864,531.40 and 354,647.31 is: 489,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,579.45 : 864,531.40 = 354,647.31 : x
  2. Step 2: Convert to fraction form
    626,579.45/864,531.40 = 354,647.31/x
  3. Step 3: Cross multiply
    626,579.45x = 864,531.40 × 354,647.31
  4. Step 4: Simplify right side
    626,579.45x = 306,603,735,420.53
  5. Step 5: Solve for x
    x = 306,603,735,420.53/626,579.45
  6. Step 6: Final answer
    x = 489,329.38

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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.