Home / 426,388.71-639,917.35-297,466.61

Finding the Fourth Proportional to 426,388.71, 639,917.35 and 297,466.61

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Solution

The fourth proportional to 426,388.71, 639,917.35 and 297,466.61 is: 446,433.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,388.71 : 639,917.35 = 297,466.61 : x
  2. Step 2: Convert to fraction form
    426,388.71/639,917.35 = 297,466.61/x
  3. Step 3: Cross multiply
    426,388.71x = 639,917.35 × 297,466.61
  4. Step 4: Simplify right side
    426,388.71x = 190,354,044,440.97
  5. Step 5: Solve for x
    x = 190,354,044,440.97/426,388.71
  6. Step 6: Final answer
    x = 446,433.13

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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.