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Finding the Fourth Proportional to 638,732.85, 958,498.16 and 425,650.29

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Solution

The fourth proportional to 638,732.85, 958,498.16 and 425,650.29 is: 638,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,732.85 : 958,498.16 = 425,650.29 : x
  2. Step 2: Convert to fraction form
    638,732.85/958,498.16 = 425,650.29/x
  3. Step 3: Cross multiply
    638,732.85x = 958,498.16 × 425,650.29
  4. Step 4: Simplify right side
    638,732.85x = 407,985,017,640.22
  5. Step 5: Solve for x
    x = 407,985,017,640.22/638,732.85
  6. Step 6: Final answer
    x = 638,741.25

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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.