Home / 645,234,116,620.25-967,374,034,772.60-390,206,803,231.78

Finding the Fourth Proportional to 645,234,116,620.25, 967,374,034,772.60 and 390,206,803,231.78

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Solution

The fourth proportional to 645,234,116,620.25, 967,374,034,772.60 and 390,206,803,231.78 is: 585,021,653,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,234,116,620.25 : 967,374,034,772.60 = 390,206,803,231.78 : x
  2. Step 2: Convert to fraction form
    645,234,116,620.25/967,374,034,772.60 = 390,206,803,231.78/x
  3. Step 3: Cross multiply
    645,234,116,620.25x = 967,374,034,772.60 × 390,206,803,231.78
  4. Step 4: Simplify right side
    645,234,116,620.25x = 377,475,929,638,045,032,120,320
  5. Step 5: Solve for x
    x = 377,475,929,638,045,032,120,320/645,234,116,620.25
  6. Step 6: Final answer
    x = 585,021,653,249.32

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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.