Home / 685,092,231.79-945,428,192.12-371,826,445.75

Finding the Fourth Proportional to 685,092,231.79, 945,428,192.12 and 371,826,445.75

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Solution

The fourth proportional to 685,092,231.79, 945,428,192.12 and 371,826,445.75 is: 513,120,990.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,092,231.79 : 945,428,192.12 = 371,826,445.75 : x
  2. Step 2: Convert to fraction form
    685,092,231.79/945,428,192.12 = 371,826,445.75/x
  3. Step 3: Cross multiply
    685,092,231.79x = 945,428,192.12 × 371,826,445.75
  4. Step 4: Simplify right side
    685,092,231.79x = 351,535,204,386,393,728
  5. Step 5: Solve for x
    x = 351,535,204,386,393,728/685,092,231.79
  6. Step 6: Final answer
    x = 513,120,990.25

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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.