Home / 644,836.50-889,806.70-358,310.34

Finding the Fourth Proportional to 644,836.50, 889,806.70 and 358,310.34

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Solution

The fourth proportional to 644,836.50, 889,806.70 and 358,310.34 is: 494,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,836.50 : 889,806.70 = 358,310.34 : x
  2. Step 2: Convert to fraction form
    644,836.50/889,806.70 = 358,310.34/x
  3. Step 3: Cross multiply
    644,836.50x = 889,806.70 × 358,310.34
  4. Step 4: Simplify right side
    644,836.50x = 318,826,941,211.28
  5. Step 5: Solve for x
    x = 318,826,941,211.28/644,836.50
  6. Step 6: Final answer
    x = 494,430.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.