Home / 621,418.50-931,750.38-405,437.67

Finding the Fourth Proportional to 621,418.50, 931,750.38 and 405,437.67

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Solution

The fourth proportional to 621,418.50, 931,750.38 and 405,437.67 is: 607,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,418.50 : 931,750.38 = 405,437.67 : x
  2. Step 2: Convert to fraction form
    621,418.50/931,750.38 = 405,437.67/x
  3. Step 3: Cross multiply
    621,418.50x = 931,750.38 × 405,437.67
  4. Step 4: Simplify right side
    621,418.50x = 377,766,703,088.82
  5. Step 5: Solve for x
    x = 377,766,703,088.82/621,418.50
  6. Step 6: Final answer
    x = 607,910.29

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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.