Home / 387,093,787.20-580,640,680.80-384,406,401.60

Finding the Fourth Proportional to 387,093,787.20, 580,640,680.80 and 384,406,401.60

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Solution

The fourth proportional to 387,093,787.20, 580,640,680.80 and 384,406,401.60 is: 576,609,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,093,787.20 : 580,640,680.80 = 384,406,401.60 : x
  2. Step 2: Convert to fraction form
    387,093,787.20/580,640,680.80 = 384,406,401.60/x
  3. Step 3: Cross multiply
    387,093,787.20x = 580,640,680.80 × 384,406,401.60
  4. Step 4: Simplify right side
    387,093,787.20x = 223,201,994,728,902,208
  5. Step 5: Solve for x
    x = 223,201,994,728,902,208/387,093,787.20
  6. Step 6: Final answer
    x = 576,609,602.40

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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.