Home / 538,137,543.38-742,629,781.44-290,618,873.78

Finding the Fourth Proportional to 538,137,543.38, 742,629,781.44 and 290,618,873.78

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Solution

The fourth proportional to 538,137,543.38, 742,629,781.44 and 290,618,873.78 is: 401,054,030.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,137,543.38 : 742,629,781.44 = 290,618,873.78 : x
  2. Step 2: Convert to fraction form
    538,137,543.38/742,629,781.44 = 290,618,873.78/x
  3. Step 3: Cross multiply
    538,137,543.38x = 742,629,781.44 × 290,618,873.78
  4. Step 4: Simplify right side
    538,137,543.38x = 215,822,230,717,580,352
  5. Step 5: Solve for x
    x = 215,822,230,717,580,352/538,137,543.38
  6. Step 6: Final answer
    x = 401,054,030.47

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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.