Home / 419,904,554.60-629,856,831.90-392,694,775.40

Finding the Fourth Proportional to 419,904,554.60, 629,856,831.90 and 392,694,775.40

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Solution

The fourth proportional to 419,904,554.60, 629,856,831.90 and 392,694,775.40 is: 589,042,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,554.60 : 629,856,831.90 = 392,694,775.40 : x
  2. Step 2: Convert to fraction form
    419,904,554.60/629,856,831.90 = 392,694,775.40/x
  3. Step 3: Cross multiply
    419,904,554.60x = 629,856,831.90 × 392,694,775.40
  4. Step 4: Simplify right side
    419,904,554.60x = 247,341,487,137,126,016
  5. Step 5: Solve for x
    x = 247,341,487,137,126,016/419,904,554.60
  6. Step 6: Final answer
    x = 589,042,163.10

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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.