Home / 678,153.60-1,018,234.80-379,231.20

Finding the Fourth Proportional to 678,153.60, 1,018,234.80 and 379,231.20

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Solution

The fourth proportional to 678,153.60, 1,018,234.80 and 379,231.20 is: 569,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,153.60 : 1,018,234.80 = 379,231.20 : x
  2. Step 2: Convert to fraction form
    678,153.60/1,018,234.80 = 379,231.20/x
  3. Step 3: Cross multiply
    678,153.60x = 1,018,234.80 × 379,231.20
  4. Step 4: Simplify right side
    678,153.60x = 386,146,405,085.76
  5. Step 5: Solve for x
    x = 386,146,405,085.76/678,153.60
  6. Step 6: Final answer
    x = 569,408.47

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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.