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Finding the Fourth Proportional to 429,399.90, 601,989.30 and 429,399.90

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Solution

The fourth proportional to 429,399.90, 601,989.30 and 429,399.90 is: 601,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,399.90 : 601,989.30 = 429,399.90 : x
  2. Step 2: Convert to fraction form
    429,399.90/601,989.30 = 429,399.90/x
  3. Step 3: Cross multiply
    429,399.90x = 601,989.30 × 429,399.90
  4. Step 4: Simplify right side
    429,399.90x = 258,494,145,221.07
  5. Step 5: Solve for x
    x = 258,494,145,221.07/429,399.90
  6. Step 6: Final answer
    x = 601,989.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.