Home / 426,541.50-639,810.42-173,765.61

Finding the Fourth Proportional to 426,541.50, 639,810.42 and 173,765.61

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Solution

The fourth proportional to 426,541.50, 639,810.42 and 173,765.61 is: 260,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,541.50 : 639,810.42 = 173,765.61 : x
  2. Step 2: Convert to fraction form
    426,541.50/639,810.42 = 173,765.61/x
  3. Step 3: Cross multiply
    426,541.50x = 639,810.42 × 173,765.61
  4. Step 4: Simplify right side
    426,541.50x = 111,177,047,915.66
  5. Step 5: Solve for x
    x = 111,177,047,915.66/426,541.50
  6. Step 6: Final answer
    x = 260,647.67

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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.