Home / 419,904,426.60-629,856,639.90-381,640,674.60

Finding the Fourth Proportional to 419,904,426.60, 629,856,639.90 and 381,640,674.60

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Solution

The fourth proportional to 419,904,426.60, 629,856,639.90 and 381,640,674.60 is: 572,461,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,426.60 : 629,856,639.90 = 381,640,674.60 : x
  2. Step 2: Convert to fraction form
    419,904,426.60/629,856,639.90 = 381,640,674.60/x
  3. Step 3: Cross multiply
    419,904,426.60x = 629,856,639.90 × 381,640,674.60
  4. Step 4: Simplify right side
    419,904,426.60x = 240,378,912,952,725,280
  5. Step 5: Solve for x
    x = 240,378,912,952,725,280/419,904,426.60
  6. Step 6: Final answer
    x = 572,461,011.90

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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.