Home / 419,938,772.40-629,908,158.60-396,130,215.60

Finding the Fourth Proportional to 419,938,772.40, 629,908,158.60 and 396,130,215.60

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Solution

The fourth proportional to 419,938,772.40, 629,908,158.60 and 396,130,215.60 is: 594,195,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,772.40 : 629,908,158.60 = 396,130,215.60 : x
  2. Step 2: Convert to fraction form
    419,938,772.40/629,908,158.60 = 396,130,215.60/x
  3. Step 3: Cross multiply
    419,938,772.40x = 629,908,158.60 × 396,130,215.60
  4. Step 4: Simplify right side
    419,938,772.40x = 249,525,654,674,417,024
  5. Step 5: Solve for x
    x = 249,525,654,674,417,024/419,938,772.40
  6. Step 6: Final answer
    x = 594,195,323.40

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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.