Home / 402,436,208.80-603,654,313.20-321,814,640.80

Finding the Fourth Proportional to 402,436,208.80, 603,654,313.20 and 321,814,640.80

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Solution

The fourth proportional to 402,436,208.80, 603,654,313.20 and 321,814,640.80 is: 482,721,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,436,208.80 : 603,654,313.20 = 321,814,640.80 : x
  2. Step 2: Convert to fraction form
    402,436,208.80/603,654,313.20 = 321,814,640.80/x
  3. Step 3: Cross multiply
    402,436,208.80x = 603,654,313.20 × 321,814,640.80
  4. Step 4: Simplify right side
    402,436,208.80x = 194,264,795,969,828,736
  5. Step 5: Solve for x
    x = 194,264,795,969,828,736/402,436,208.80
  6. Step 6: Final answer
    x = 482,721,961.20

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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.