Home / 445,659,877.77-615,012,859.64-278,493,208.53

Finding the Fourth Proportional to 445,659,877.77, 615,012,859.64 and 278,493,208.53

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Solution

The fourth proportional to 445,659,877.77, 615,012,859.64 and 278,493,208.53 is: 384,322,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,659,877.77 : 615,012,859.64 = 278,493,208.53 : x
  2. Step 2: Convert to fraction form
    445,659,877.77/615,012,859.64 = 278,493,208.53/x
  3. Step 3: Cross multiply
    445,659,877.77x = 615,012,859.64 × 278,493,208.53
  4. Step 4: Simplify right side
    445,659,877.77x = 171,276,904,566,961,664
  5. Step 5: Solve for x
    x = 171,276,904,566,961,664/445,659,877.77
  6. Step 6: Final answer
    x = 384,322,020.25

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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.