Home / 659,297,947.80-988,946,921.70-199,307,112.60

Finding the Fourth Proportional to 659,297,947.80, 988,946,921.70 and 199,307,112.60

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Solution

The fourth proportional to 659,297,947.80, 988,946,921.70 and 199,307,112.60 is: 298,960,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,297,947.80 : 988,946,921.70 = 199,307,112.60 : x
  2. Step 2: Convert to fraction form
    659,297,947.80/988,946,921.70 = 199,307,112.60/x
  3. Step 3: Cross multiply
    659,297,947.80x = 988,946,921.70 × 199,307,112.60
  4. Step 4: Simplify right side
    659,297,947.80x = 197,104,155,478,685,280
  5. Step 5: Solve for x
    x = 197,104,155,478,685,280/659,297,947.80
  6. Step 6: Final answer
    x = 298,960,668.90

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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.