Home / 947,978.14-1,308,156.87-518,172.70

Finding the Fourth Proportional to 947,978.14, 1,308,156.87 and 518,172.70

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Solution

The fourth proportional to 947,978.14, 1,308,156.87 and 518,172.70 is: 715,049.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,978.14 : 1,308,156.87 = 518,172.70 : x
  2. Step 2: Convert to fraction form
    947,978.14/1,308,156.87 = 518,172.70/x
  3. Step 3: Cross multiply
    947,978.14x = 1,308,156.87 × 518,172.70
  4. Step 4: Simplify right side
    947,978.14x = 677,851,177,351.45
  5. Step 5: Solve for x
    x = 677,851,177,351.45/947,978.14
  6. Step 6: Final answer
    x = 715,049.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.