Home / 434,436.80-651,655.20-419,921.60

Finding the Fourth Proportional to 434,436.80, 651,655.20 and 419,921.60

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Solution

The fourth proportional to 434,436.80, 651,655.20 and 419,921.60 is: 629,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,436.80 : 651,655.20 = 419,921.60 : x
  2. Step 2: Convert to fraction form
    434,436.80/651,655.20 = 419,921.60/x
  3. Step 3: Cross multiply
    434,436.80x = 651,655.20 × 419,921.60
  4. Step 4: Simplify right side
    434,436.80x = 273,644,094,232.32
  5. Step 5: Solve for x
    x = 273,644,094,232.32/434,436.80
  6. Step 6: Final answer
    x = 629,882.40

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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.