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Finding the Fourth Proportional to 603,627.12, 831,951 and 442,139.04

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Solution

The fourth proportional to 603,627.12, 831,951 and 442,139.04 is: 609,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,627.12 : 831,951 = 442,139.04 : x
  2. Step 2: Convert to fraction form
    603,627.12/831,951 = 442,139.04/x
  3. Step 3: Cross multiply
    603,627.12x = 831,951 × 442,139.04
  4. Step 4: Simplify right side
    603,627.12x = 367,838,016,467.04
  5. Step 5: Solve for x
    x = 367,838,016,467.04/603,627.12
  6. Step 6: Final answer
    x = 609,379.54

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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.