Home / 521,362,786.71-719,488,015.02-286,435,159.23

Finding the Fourth Proportional to 521,362,786.71, 719,488,015.02 and 286,435,159.23

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Solution

The fourth proportional to 521,362,786.71, 719,488,015.02 and 286,435,159.23 is: 395,284,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,362,786.71 : 719,488,015.02 = 286,435,159.23 : x
  2. Step 2: Convert to fraction form
    521,362,786.71/719,488,015.02 = 286,435,159.23/x
  3. Step 3: Cross multiply
    521,362,786.71x = 719,488,015.02 × 286,435,159.23
  4. Step 4: Simplify right side
    521,362,786.71x = 206,086,664,146,330,336
  5. Step 5: Solve for x
    x = 206,086,664,146,330,336/521,362,786.71
  6. Step 6: Final answer
    x = 395,284,568.44

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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.