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Finding the Fourth Proportional to 559,874,000.20, 839,811,000.30 and 387,302,787.40

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Solution

The fourth proportional to 559,874,000.20, 839,811,000.30 and 387,302,787.40 is: 580,954,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,874,000.20 : 839,811,000.30 = 387,302,787.40 : x
  2. Step 2: Convert to fraction form
    559,874,000.20/839,811,000.30 = 387,302,787.40/x
  3. Step 3: Cross multiply
    559,874,000.20x = 839,811,000.30 × 387,302,787.40
  4. Step 4: Simplify right side
    559,874,000.20x = 325,261,141,305,372,224
  5. Step 5: Solve for x
    x = 325,261,141,305,372,224/559,874,000.20
  6. Step 6: Final answer
    x = 580,954,181.10

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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.