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Finding the Fourth Proportional to 425,379.08, 587,064.50 and 317,762.28

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Solution

The fourth proportional to 425,379.08, 587,064.50 and 317,762.28 is: 438,542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,379.08 : 587,064.50 = 317,762.28 : x
  2. Step 2: Convert to fraction form
    425,379.08/587,064.50 = 317,762.28/x
  3. Step 3: Cross multiply
    425,379.08x = 587,064.50 × 317,762.28
  4. Step 4: Simplify right side
    425,379.08x = 186,546,954,027.06
  5. Step 5: Solve for x
    x = 186,546,954,027.06/425,379.08
  6. Step 6: Final answer
    x = 438,542.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.