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Finding the Fourth Proportional to 386,042,646.60, 579,063,969.90 and 325,576,470.60

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Solution

The fourth proportional to 386,042,646.60, 579,063,969.90 and 325,576,470.60 is: 488,364,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,042,646.60 : 579,063,969.90 = 325,576,470.60 : x
  2. Step 2: Convert to fraction form
    386,042,646.60/579,063,969.90 = 325,576,470.60/x
  3. Step 3: Cross multiply
    386,042,646.60x = 579,063,969.90 × 325,576,470.60
  4. Step 4: Simplify right side
    386,042,646.60x = 188,529,603,571,666,656
  5. Step 5: Solve for x
    x = 188,529,603,571,666,656/386,042,646.60
  6. Step 6: Final answer
    x = 488,364,705.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.