Home / 407,188,821.40-610,783,232.10-213,025,211.80

Finding the Fourth Proportional to 407,188,821.40, 610,783,232.10 and 213,025,211.80

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Solution

The fourth proportional to 407,188,821.40, 610,783,232.10 and 213,025,211.80 is: 319,537,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,188,821.40 : 610,783,232.10 = 213,025,211.80 : x
  2. Step 2: Convert to fraction form
    407,188,821.40/610,783,232.10 = 213,025,211.80/x
  3. Step 3: Cross multiply
    407,188,821.40x = 610,783,232.10 × 213,025,211.80
  4. Step 4: Simplify right side
    407,188,821.40x = 130,112,227,381,991,072
  5. Step 5: Solve for x
    x = 130,112,227,381,991,072/407,188,821.40
  6. Step 6: Final answer
    x = 319,537,817.70

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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.