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Finding the Fourth Proportional to 446,402.89, 616,212.64 and 310,515.69

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Solution

The fourth proportional to 446,402.89, 616,212.64 and 310,515.69 is: 428,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,402.89 : 616,212.64 = 310,515.69 : x
  2. Step 2: Convert to fraction form
    446,402.89/616,212.64 = 310,515.69/x
  3. Step 3: Cross multiply
    446,402.89x = 616,212.64 × 310,515.69
  4. Step 4: Simplify right side
    446,402.89x = 191,343,693,872.61
  5. Step 5: Solve for x
    x = 191,343,693,872.61/446,402.89
  6. Step 6: Final answer
    x = 428,634.54

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1.5x scale

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.