Home / 419,904,881.60-629,857,322.40-392,695,102.40

Finding the Fourth Proportional to 419,904,881.60, 629,857,322.40 and 392,695,102.40

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Solution

The fourth proportional to 419,904,881.60, 629,857,322.40 and 392,695,102.40 is: 589,042,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,881.60 : 629,857,322.40 = 392,695,102.40 : x
  2. Step 2: Convert to fraction form
    419,904,881.60/629,857,322.40 = 392,695,102.40/x
  3. Step 3: Cross multiply
    419,904,881.60x = 629,857,322.40 × 392,695,102.40
  4. Step 4: Simplify right side
    419,904,881.60x = 247,341,885,717,257,792
  5. Step 5: Solve for x
    x = 247,341,885,717,257,792/419,904,881.60
  6. Step 6: Final answer
    x = 589,042,653.60

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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.