Home / 645,234,116,625.15-967,374,034,780.05-390,206,803,236.78

Finding the Fourth Proportional to 645,234,116,625.15, 967,374,034,780.05 and 390,206,803,236.78

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Solution

The fourth proportional to 645,234,116,625.15, 967,374,034,780.05 and 390,206,803,236.78 is: 585,021,653,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,234,116,625.15 : 967,374,034,780.05 = 390,206,803,236.78 : x
  2. Step 2: Convert to fraction form
    645,234,116,625.15/967,374,034,780.05 = 390,206,803,236.78/x
  3. Step 3: Cross multiply
    645,234,116,625.15x = 967,374,034,780.05 × 390,206,803,236.78
  4. Step 4: Simplify right side
    645,234,116,625.15x = 377,475,929,645,788,992,372,736
  5. Step 5: Solve for x
    x = 377,475,929,645,788,992,372,736/645,234,116,625.15
  6. Step 6: Final answer
    x = 585,021,653,256.88

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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.