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Finding the Fourth Proportional to 404,929,879.47, 608,363,809.61 and 259,648,080.75

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Solution

The fourth proportional to 404,929,879.47, 608,363,809.61 and 259,648,080.75 is: 390,093,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,929,879.47 : 608,363,809.61 = 259,648,080.75 : x
  2. Step 2: Convert to fraction form
    404,929,879.47/608,363,809.61 = 259,648,080.75/x
  3. Step 3: Cross multiply
    404,929,879.47x = 608,363,809.61 × 259,648,080.75
  4. Step 4: Simplify right side
    404,929,879.47x = 157,960,495,561,696,672
  5. Step 5: Solve for x
    x = 157,960,495,561,696,672/404,929,879.47
  6. Step 6: Final answer
    x = 390,093,454.62

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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.