Home / 426,389.51-639,918.55-297,467.41

Finding the Fourth Proportional to 426,389.51, 639,918.55 and 297,467.41

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Solution

The fourth proportional to 426,389.51, 639,918.55 and 297,467.41 is: 446,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,389.51 : 639,918.55 = 297,467.41 : x
  2. Step 2: Convert to fraction form
    426,389.51/639,918.55 = 297,467.41/x
  3. Step 3: Cross multiply
    426,389.51x = 639,918.55 × 297,467.41
  4. Step 4: Simplify right side
    426,389.51x = 190,354,912,451.49
  5. Step 5: Solve for x
    x = 190,354,912,451.49/426,389.51
  6. Step 6: Final answer
    x = 446,434.33

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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.