Home / 419,938,639.40-629,907,959.10-396,130,082.60

Finding the Fourth Proportional to 419,938,639.40, 629,907,959.10 and 396,130,082.60

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Solution

The fourth proportional to 419,938,639.40, 629,907,959.10 and 396,130,082.60 is: 594,195,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,639.40 : 629,907,959.10 = 396,130,082.60 : x
  2. Step 2: Convert to fraction form
    419,938,639.40/629,907,959.10 = 396,130,082.60/x
  3. Step 3: Cross multiply
    419,938,639.40x = 629,907,959.10 × 396,130,082.60
  4. Step 4: Simplify right side
    419,938,639.40x = 249,525,491,868,680,448
  5. Step 5: Solve for x
    x = 249,525,491,868,680,448/419,938,639.40
  6. Step 6: Final answer
    x = 594,195,123.90

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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.