Home / 287,712,976.70-431,569,465.05-263,904,419.90

Finding the Fourth Proportional to 287,712,976.70, 431,569,465.05 and 263,904,419.90

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Solution

The fourth proportional to 287,712,976.70, 431,569,465.05 and 263,904,419.90 is: 395,856,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,976.70 : 431,569,465.05 = 263,904,419.90 : x
  2. Step 2: Convert to fraction form
    287,712,976.70/431,569,465.05 = 263,904,419.90/x
  3. Step 3: Cross multiply
    287,712,976.70x = 431,569,465.05 × 263,904,419.90
  4. Step 4: Simplify right side
    287,712,976.70x = 113,893,089,320,573,584
  5. Step 5: Solve for x
    x = 113,893,089,320,573,584/287,712,976.70
  6. Step 6: Final answer
    x = 395,856,629.85

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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.