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Finding the Fourth Proportional to 549,561.45, 758,436.87 and 345,787.05

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Solution

The fourth proportional to 549,561.45, 758,436.87 and 345,787.05 is: 477,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,561.45 : 758,436.87 = 345,787.05 : x
  2. Step 2: Convert to fraction form
    549,561.45/758,436.87 = 345,787.05/x
  3. Step 3: Cross multiply
    549,561.45x = 758,436.87 × 345,787.05
  4. Step 4: Simplify right side
    549,561.45x = 262,257,647,888.53
  5. Step 5: Solve for x
    x = 262,257,647,888.53/549,561.45
  6. Step 6: Final answer
    x = 477,212.60

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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.