Home / 378,448,740.48-522,227,980.80-213,476,856.96

Finding the Fourth Proportional to 378,448,740.48, 522,227,980.80 and 213,476,856.96

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Solution

The fourth proportional to 378,448,740.48, 522,227,980.80 and 213,476,856.96 is: 294,580,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,448,740.48 : 522,227,980.80 = 213,476,856.96 : x
  2. Step 2: Convert to fraction form
    378,448,740.48/522,227,980.80 = 213,476,856.96/x
  3. Step 3: Cross multiply
    378,448,740.48x = 522,227,980.80 × 213,476,856.96
  4. Step 4: Simplify right side
    378,448,740.48x = 111,483,587,957,751,232
  5. Step 5: Solve for x
    x = 111,483,587,957,751,232/378,448,740.48
  6. Step 6: Final answer
    x = 294,580,417.46

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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.