Home / 1,242,739,898.82-1,714,977,543.87-685,818,963.72

Finding the Fourth Proportional to 1,242,739,898.82, 1,714,977,543.87 and 685,818,963.72

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Solution

The fourth proportional to 1,242,739,898.82, 1,714,977,543.87 and 685,818,963.72 is: 946,428,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,739,898.82 : 1,714,977,543.87 = 685,818,963.72 : x
  2. Step 2: Convert to fraction form
    1,242,739,898.82/1,714,977,543.87 = 685,818,963.72/x
  3. Step 3: Cross multiply
    1,242,739,898.82x = 1,714,977,543.87 × 685,818,963.72
  4. Step 4: Simplify right side
    1,242,739,898.82x = 1,176,164,121,939,994,112
  5. Step 5: Solve for x
    x = 1,176,164,121,939,994,112/1,242,739,898.82
  6. Step 6: Final answer
    x = 946,428,229.32

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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.