Home / 645,466.40-967,313.85-408,384.67

Finding the Fourth Proportional to 645,466.40, 967,313.85 and 408,384.67

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Solution

The fourth proportional to 645,466.40, 967,313.85 and 408,384.67 is: 612,016.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,466.40 : 967,313.85 = 408,384.67 : x
  2. Step 2: Convert to fraction form
    645,466.40/967,313.85 = 408,384.67/x
  3. Step 3: Cross multiply
    645,466.40x = 967,313.85 × 408,384.67
  4. Step 4: Simplify right side
    645,466.40x = 395,036,142,582.11
  5. Step 5: Solve for x
    x = 395,036,142,582.11/645,466.40
  6. Step 6: Final answer
    x = 612,016.59

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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.