Home / 489,212,999.80-733,819,499.70-451,799,553.40

Finding the Fourth Proportional to 489,212,999.80, 733,819,499.70 and 451,799,553.40

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Solution

The fourth proportional to 489,212,999.80, 733,819,499.70 and 451,799,553.40 is: 677,699,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,212,999.80 : 733,819,499.70 = 451,799,553.40 : x
  2. Step 2: Convert to fraction form
    489,212,999.80/733,819,499.70 = 451,799,553.40/x
  3. Step 3: Cross multiply
    489,212,999.80x = 733,819,499.70 × 451,799,553.40
  4. Step 4: Simplify right side
    489,212,999.80x = 331,539,322,240,671,424
  5. Step 5: Solve for x
    x = 331,539,322,240,671,424/489,212,999.80
  6. Step 6: Final answer
    x = 677,699,330.10

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1.5x scale

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.