Home / 427,430,429.40-641,145,644.10-403,621,872.60

Finding the Fourth Proportional to 427,430,429.40, 641,145,644.10 and 403,621,872.60

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Solution

The fourth proportional to 427,430,429.40, 641,145,644.10 and 403,621,872.60 is: 605,432,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,430,429.40 : 641,145,644.10 = 403,621,872.60 : x
  2. Step 2: Convert to fraction form
    427,430,429.40/641,145,644.10 = 403,621,872.60/x
  3. Step 3: Cross multiply
    427,430,429.40x = 641,145,644.10 × 403,621,872.60
  4. Step 4: Simplify right side
    427,430,429.40x = 258,780,405,480,975,168
  5. Step 5: Solve for x
    x = 258,780,405,480,975,168/427,430,429.40
  6. Step 6: Final answer
    x = 605,432,808.90

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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.