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Finding the Fourth Proportional to 634,187.16, 875,181.78 and 379,475.64

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Solution

The fourth proportional to 634,187.16, 875,181.78 and 379,475.64 is: 523,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,187.16 : 875,181.78 = 379,475.64 : x
  2. Step 2: Convert to fraction form
    634,187.16/875,181.78 = 379,475.64/x
  3. Step 3: Cross multiply
    634,187.16x = 875,181.78 × 379,475.64
  4. Step 4: Simplify right side
    634,187.16x = 332,110,166,081.84
  5. Step 5: Solve for x
    x = 332,110,166,081.84/634,187.16
  6. Step 6: Final answer
    x = 523,678.48

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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.