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Finding the Fourth Proportional to 446,133.60, 667,256.40 and 399,088.80

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Solution

The fourth proportional to 446,133.60, 667,256.40 and 399,088.80 is: 596,894.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,133.60 : 667,256.40 = 399,088.80 : x
  2. Step 2: Convert to fraction form
    446,133.60/667,256.40 = 399,088.80/x
  3. Step 3: Cross multiply
    446,133.60x = 667,256.40 × 399,088.80
  4. Step 4: Simplify right side
    446,133.60x = 266,294,555,968.32
  5. Step 5: Solve for x
    x = 266,294,555,968.32/446,133.60
  6. Step 6: Final answer
    x = 596,894.19

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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.