Home / 919,091,348.20-1,379,308,868.70-646,993,556.20

Finding the Fourth Proportional to 919,091,348.20, 1,379,308,868.70 and 646,993,556.20

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Solution

The fourth proportional to 919,091,348.20, 1,379,308,868.70 and 646,993,556.20 is: 970,963,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,091,348.20 : 1,379,308,868.70 = 646,993,556.20 : x
  2. Step 2: Convert to fraction form
    919,091,348.20/1,379,308,868.70 = 646,993,556.20/x
  3. Step 3: Cross multiply
    919,091,348.20x = 1,379,308,868.70 × 646,993,556.20
  4. Step 4: Simplify right side
    919,091,348.20x = 892,403,950,058,411,904
  5. Step 5: Solve for x
    x = 892,403,950,058,411,904/919,091,348.20
  6. Step 6: Final answer
    x = 970,963,279.99

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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.