Home / 820,195,955.90-1,131,870,384.33-443,852,555.31

Finding the Fourth Proportional to 820,195,955.90, 1,131,870,384.33 and 443,852,555.31

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Solution

The fourth proportional to 820,195,955.90, 1,131,870,384.33 and 443,852,555.31 is: 612,516,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,195,955.90 : 1,131,870,384.33 = 443,852,555.31 : x
  2. Step 2: Convert to fraction form
    820,195,955.90/1,131,870,384.33 = 443,852,555.31/x
  3. Step 3: Cross multiply
    820,195,955.90x = 1,131,870,384.33 × 443,852,555.31
  4. Step 4: Simplify right side
    820,195,955.90x = 502,383,562,364,582,272
  5. Step 5: Solve for x
    x = 502,383,562,364,582,272/820,195,955.90
  6. Step 6: Final answer
    x = 612,516,507.49

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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.