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Finding the Fourth Proportional to 429,493.85, 644,240.78 and 404,999.45

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Solution

The fourth proportional to 429,493.85, 644,240.78 and 404,999.45 is: 607,499.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,493.85 : 644,240.78 = 404,999.45 : x
  2. Step 2: Convert to fraction form
    429,493.85/644,240.78 = 404,999.45/x
  3. Step 3: Cross multiply
    429,493.85x = 644,240.78 × 404,999.45
  4. Step 4: Simplify right side
    429,493.85x = 260,917,159,542.57
  5. Step 5: Solve for x
    x = 260,917,159,542.57/429,493.85
  6. Step 6: Final answer
    x = 607,499.18

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1.5x scale

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.