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Finding the Fourth Proportional to 502,825.70, 754,238.55 and 343,393.40

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Solution

The fourth proportional to 502,825.70, 754,238.55 and 343,393.40 is: 515,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,825.70 : 754,238.55 = 343,393.40 : x
  2. Step 2: Convert to fraction form
    502,825.70/754,238.55 = 343,393.40/x
  3. Step 3: Cross multiply
    502,825.70x = 754,238.55 × 343,393.40
  4. Step 4: Simplify right side
    502,825.70x = 259,000,540,095.57
  5. Step 5: Solve for x
    x = 259,000,540,095.57/502,825.70
  6. Step 6: Final answer
    x = 515,090.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.