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Finding the Fourth Proportional to 611,783.14, 916,639.10 and 374,630.52

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Solution

The fourth proportional to 611,783.14, 916,639.10 and 374,630.52 is: 561,311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,783.14 : 916,639.10 = 374,630.52 : x
  2. Step 2: Convert to fraction form
    611,783.14/916,639.10 = 374,630.52/x
  3. Step 3: Cross multiply
    611,783.14x = 916,639.10 × 374,630.52
  4. Step 4: Simplify right side
    611,783.14x = 343,400,982,685.33
  5. Step 5: Solve for x
    x = 343,400,982,685.33/611,783.14
  6. Step 6: Final answer
    x = 561,311.62

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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.