Home / 419,938,763.40-629,908,145.10-396,130,206.60

Finding the Fourth Proportional to 419,938,763.40, 629,908,145.10 and 396,130,206.60

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Solution

The fourth proportional to 419,938,763.40, 629,908,145.10 and 396,130,206.60 is: 594,195,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,763.40 : 629,908,145.10 = 396,130,206.60 : x
  2. Step 2: Convert to fraction form
    419,938,763.40/629,908,145.10 = 396,130,206.60/x
  3. Step 3: Cross multiply
    419,938,763.40x = 629,908,145.10 × 396,130,206.60
  4. Step 4: Simplify right side
    419,938,763.40x = 249,525,643,657,485,792
  5. Step 5: Solve for x
    x = 249,525,643,657,485,792/419,938,763.40
  6. Step 6: Final answer
    x = 594,195,309.90

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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.