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Finding the Fourth Proportional to 441,113.60, 661,670.40 and 402,406.40

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Solution

The fourth proportional to 441,113.60, 661,670.40 and 402,406.40 is: 603,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,113.60 : 661,670.40 = 402,406.40 : x
  2. Step 2: Convert to fraction form
    441,113.60/661,670.40 = 402,406.40/x
  3. Step 3: Cross multiply
    441,113.60x = 661,670.40 × 402,406.40
  4. Step 4: Simplify right side
    441,113.60x = 266,260,403,650.56
  5. Step 5: Solve for x
    x = 266,260,403,650.56/441,113.60
  6. Step 6: Final answer
    x = 603,609.60

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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.