Home / 419,938,340.40-629,907,510.60-396,129,783.60

Finding the Fourth Proportional to 419,938,340.40, 629,907,510.60 and 396,129,783.60

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Solution

The fourth proportional to 419,938,340.40, 629,907,510.60 and 396,129,783.60 is: 594,194,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,340.40 : 629,907,510.60 = 396,129,783.60 : x
  2. Step 2: Convert to fraction form
    419,938,340.40/629,907,510.60 = 396,129,783.60/x
  3. Step 3: Cross multiply
    419,938,340.40x = 629,907,510.60 × 396,129,783.60
  4. Step 4: Simplify right side
    419,938,340.40x = 249,525,125,861,992,736
  5. Step 5: Solve for x
    x = 249,525,125,861,992,736/419,938,340.40
  6. Step 6: Final answer
    x = 594,194,675.40

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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.