Home / 729,685,443.87-1,006,966,455.44-395,160,563.07

Finding the Fourth Proportional to 729,685,443.87, 1,006,966,455.44 and 395,160,563.07

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Solution

The fourth proportional to 729,685,443.87, 1,006,966,455.44 and 395,160,563.07 is: 545,321,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,685,443.87 : 1,006,966,455.44 = 395,160,563.07 : x
  2. Step 2: Convert to fraction form
    729,685,443.87/1,006,966,455.44 = 395,160,563.07/x
  3. Step 3: Cross multiply
    729,685,443.87x = 1,006,966,455.44 × 395,160,563.07
  4. Step 4: Simplify right side
    729,685,443.87x = 397,913,431,522,296,640
  5. Step 5: Solve for x
    x = 397,913,431,522,296,640/729,685,443.87
  6. Step 6: Final answer
    x = 545,321,871.04

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Double scale
Find fourth proportional to 729,685,444.87, 1,006,966,456.82 and 395,160,564.07
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1.5x scale

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.