Home / 646,176.28-891,823.53-388,196.84

Finding the Fourth Proportional to 646,176.28, 891,823.53 and 388,196.84

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Solution

The fourth proportional to 646,176.28, 891,823.53 and 388,196.84 is: 535,771.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,176.28 : 891,823.53 = 388,196.84 : x
  2. Step 2: Convert to fraction form
    646,176.28/891,823.53 = 388,196.84/x
  3. Step 3: Cross multiply
    646,176.28x = 891,823.53 × 388,196.84
  4. Step 4: Simplify right side
    646,176.28x = 346,203,076,183.65
  5. Step 5: Solve for x
    x = 346,203,076,183.65/646,176.28
  6. Step 6: Final answer
    x = 535,771.88

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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.