Home / 343,940.04-512,423.37-327,000.78

Finding the Fourth Proportional to 343,940.04, 512,423.37 and 327,000.78

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Solution

The fourth proportional to 343,940.04, 512,423.37 and 327,000.78 is: 487,186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,940.04 : 512,423.37 = 327,000.78 : x
  2. Step 2: Convert to fraction form
    343,940.04/512,423.37 = 327,000.78/x
  3. Step 3: Cross multiply
    343,940.04x = 512,423.37 × 327,000.78
  4. Step 4: Simplify right side
    343,940.04x = 167,562,841,680.23
  5. Step 5: Solve for x
    x = 167,562,841,680.23/343,940.04
  6. Step 6: Final answer
    x = 487,186.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.