Home / 686,861,772.48-947,783,156.76-464,327,640.72

Finding the Fourth Proportional to 686,861,772.48, 947,783,156.76 and 464,327,640.72

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Solution

The fourth proportional to 686,861,772.48, 947,783,156.76 and 464,327,640.72 is: 640,713,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,861,772.48 : 947,783,156.76 = 464,327,640.72 : x
  2. Step 2: Convert to fraction form
    686,861,772.48/947,783,156.76 = 464,327,640.72/x
  3. Step 3: Cross multiply
    686,861,772.48x = 947,783,156.76 × 464,327,640.72
  4. Step 4: Simplify right side
    686,861,772.48x = 440,081,917,092,524,736
  5. Step 5: Solve for x
    x = 440,081,917,092,524,736/686,861,772.48
  6. Step 6: Final answer
    x = 640,713,946.71

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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.