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Finding the Fourth Proportional to 473,844.78, 653,482.35 and 393,144.48

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Solution

The fourth proportional to 473,844.78, 653,482.35 and 393,144.48 is: 542,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,844.78 : 653,482.35 = 393,144.48 : x
  2. Step 2: Convert to fraction form
    473,844.78/653,482.35 = 393,144.48/x
  3. Step 3: Cross multiply
    473,844.78x = 653,482.35 × 393,144.48
  4. Step 4: Simplify right side
    473,844.78x = 256,912,978,679.93
  5. Step 5: Solve for x
    x = 256,912,978,679.93/473,844.78
  6. Step 6: Final answer
    x = 542,188.05

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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.