Home / 1,181,619,935.31-1,630,640,502.32-645,782,540.43

Finding the Fourth Proportional to 1,181,619,935.31, 1,630,640,502.32 and 645,782,540.43

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Solution

The fourth proportional to 1,181,619,935.31, 1,630,640,502.32 and 645,782,540.43 is: 891,182,633.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,619,935.31 : 1,630,640,502.32 = 645,782,540.43 : x
  2. Step 2: Convert to fraction form
    1,181,619,935.31/1,630,640,502.32 = 645,782,540.43/x
  3. Step 3: Cross multiply
    1,181,619,935.31x = 1,630,640,502.32 × 645,782,540.43
  4. Step 4: Simplify right side
    1,181,619,935.31x = 1,053,039,166,113,031,936
  5. Step 5: Solve for x
    x = 1,053,039,166,113,031,936/1,181,619,935.31
  6. Step 6: Final answer
    x = 891,182,633.81

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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.