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Finding the Fourth Proportional to 626,641.25, 864,450.43 and 422,433.77

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Solution

The fourth proportional to 626,641.25, 864,450.43 and 422,433.77 is: 582,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,641.25 : 864,450.43 = 422,433.77 : x
  2. Step 2: Convert to fraction form
    626,641.25/864,450.43 = 422,433.77/x
  3. Step 3: Cross multiply
    626,641.25x = 864,450.43 × 422,433.77
  4. Step 4: Simplify right side
    626,641.25x = 365,173,048,744.69
  5. Step 5: Solve for x
    x = 365,173,048,744.69/626,641.25
  6. Step 6: Final answer
    x = 582,746.59

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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.