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Finding the Fourth Proportional to 626,492.54, 864,559.34 and 354,555.50

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Solution

The fourth proportional to 626,492.54, 864,559.34 and 354,555.50 is: 489,286.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,492.54 : 864,559.34 = 354,555.50 : x
  2. Step 2: Convert to fraction form
    626,492.54/864,559.34 = 354,555.50/x
  3. Step 3: Cross multiply
    626,492.54x = 864,559.34 × 354,555.50
  4. Step 4: Simplify right side
    626,492.54x = 306,534,269,073.37
  5. Step 5: Solve for x
    x = 306,534,269,073.37/626,492.54
  6. Step 6: Final answer
    x = 489,286.38

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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.