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Finding the Fourth Proportional to 620,298,918.97, 855,987,585.88 and 338,035,365.94

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Solution

The fourth proportional to 620,298,918.97, 855,987,585.88 and 338,035,365.94 is: 466,475,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,298,918.97 : 855,987,585.88 = 338,035,365.94 : x
  2. Step 2: Convert to fraction form
    620,298,918.97/855,987,585.88 = 338,035,365.94/x
  3. Step 3: Cross multiply
    620,298,918.97x = 855,987,585.88 × 338,035,365.94
  4. Step 4: Simplify right side
    620,298,918.97x = 289,354,076,833,042,944
  5. Step 5: Solve for x
    x = 289,354,076,833,042,944/620,298,918.97
  6. Step 6: Final answer
    x = 466,475,223.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.