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Finding the Fourth Proportional to 723,999.42, 995,576.25 and 628,340.06

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Solution

The fourth proportional to 723,999.42, 995,576.25 and 628,340.06 is: 864,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,999.42 : 995,576.25 = 628,340.06 : x
  2. Step 2: Convert to fraction form
    723,999.42/995,576.25 = 628,340.06/x
  3. Step 3: Cross multiply
    723,999.42x = 995,576.25 × 628,340.06
  4. Step 4: Simplify right side
    723,999.42x = 625,560,440,659.58
  5. Step 5: Solve for x
    x = 625,560,440,659.58/723,999.42
  6. Step 6: Final answer
    x = 864,034.45

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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.