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Finding the Fourth Proportional to 615,060.12, 848,783.34 and 343,128.03

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Solution

The fourth proportional to 615,060.12, 848,783.34 and 343,128.03 is: 473,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,060.12 : 848,783.34 = 343,128.03 : x
  2. Step 2: Convert to fraction form
    615,060.12/848,783.34 = 343,128.03/x
  3. Step 3: Cross multiply
    615,060.12x = 848,783.34 × 343,128.03
  4. Step 4: Simplify right side
    615,060.12x = 291,241,355,351.02
  5. Step 5: Solve for x
    x = 291,241,355,351.02/615,060.12
  6. Step 6: Final answer
    x = 473,516.89

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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.