Home / 648,619,120.90-974,480,817.38-415,905,771

Finding the Fourth Proportional to 648,619,120.90, 974,480,817.38 and 415,905,771

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Solution

The fourth proportional to 648,619,120.90, 974,480,817.38 and 415,905,771 is: 624,853,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,619,120.90 : 974,480,817.38 = 415,905,771 : x
  2. Step 2: Convert to fraction form
    648,619,120.90/974,480,817.38 = 415,905,771/x
  3. Step 3: Cross multiply
    648,619,120.90x = 974,480,817.38 × 415,905,771
  4. Step 4: Simplify right side
    648,619,120.90x = 405,292,195,678,178,880
  5. Step 5: Solve for x
    x = 405,292,195,678,178,880/648,619,120.90
  6. Step 6: Final answer
    x = 624,853,912.91

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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.