Home / 388,126,704.47-580,421,735.99-289,827,440.51

Finding the Fourth Proportional to 388,126,704.47, 580,421,735.99 and 289,827,440.51

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Solution

The fourth proportional to 388,126,704.47, 580,421,735.99 and 289,827,440.51 is: 433,420,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,126,704.47 : 580,421,735.99 = 289,827,440.51 : x
  2. Step 2: Convert to fraction form
    388,126,704.47/580,421,735.99 = 289,827,440.51/x
  3. Step 3: Cross multiply
    388,126,704.47x = 580,421,735.99 × 289,827,440.51
  4. Step 4: Simplify right side
    388,126,704.47x = 168,222,146,156,903,520
  5. Step 5: Solve for x
    x = 168,222,146,156,903,520/388,126,704.47
  6. Step 6: Final answer
    x = 433,420,695.41

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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.