Home / 419,938,409.40-629,907,614.10-396,129,852.60

Finding the Fourth Proportional to 419,938,409.40, 629,907,614.10 and 396,129,852.60

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Solution

The fourth proportional to 419,938,409.40, 629,907,614.10 and 396,129,852.60 is: 594,194,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,409.40 : 629,907,614.10 = 396,129,852.60 : x
  2. Step 2: Convert to fraction form
    419,938,409.40/629,907,614.10 = 396,129,852.60/x
  3. Step 3: Cross multiply
    419,938,409.40x = 629,907,614.10 × 396,129,852.60
  4. Step 4: Simplify right side
    419,938,409.40x = 249,525,210,325,050,720
  5. Step 5: Solve for x
    x = 249,525,210,325,050,720/419,938,409.40
  6. Step 6: Final answer
    x = 594,194,778.90

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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.