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Finding the Fourth Proportional to 426,379.37, 639,903.15 and 297,457.25

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Solution

The fourth proportional to 426,379.37, 639,903.15 and 297,457.25 is: 446,418.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,379.37 : 639,903.15 = 297,457.25 : x
  2. Step 2: Convert to fraction form
    426,379.37/639,903.15 = 297,457.25/x
  3. Step 3: Cross multiply
    426,379.37x = 639,903.15 × 297,457.25
  4. Step 4: Simplify right side
    426,379.37x = 190,343,828,065.82
  5. Step 5: Solve for x
    x = 190,343,828,065.82/426,379.37
  6. Step 6: Final answer
    x = 446,418.95

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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.