Home / 718,289,776.37-991,239,452.97-388,264,915.37

Finding the Fourth Proportional to 718,289,776.37, 991,239,452.97 and 388,264,915.37

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Solution

The fourth proportional to 718,289,776.37, 991,239,452.97 and 388,264,915.37 is: 535,805,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,289,776.37 : 991,239,452.97 = 388,264,915.37 : x
  2. Step 2: Convert to fraction form
    718,289,776.37/991,239,452.97 = 388,264,915.37/x
  3. Step 3: Cross multiply
    718,289,776.37x = 991,239,452.97 × 388,264,915.37
  4. Step 4: Simplify right side
    718,289,776.37x = 384,863,502,321,280,256
  5. Step 5: Solve for x
    x = 384,863,502,321,280,256/718,289,776.37
  6. Step 6: Final answer
    x = 535,805,346.23

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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.