Home / 678,624.20-1,017,936.30-620,563.40

Finding the Fourth Proportional to 678,624.20, 1,017,936.30 and 620,563.40

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Solution

The fourth proportional to 678,624.20, 1,017,936.30 and 620,563.40 is: 930,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,624.20 : 1,017,936.30 = 620,563.40 : x
  2. Step 2: Convert to fraction form
    678,624.20/1,017,936.30 = 620,563.40/x
  3. Step 3: Cross multiply
    678,624.20x = 1,017,936.30 × 620,563.40
  4. Step 4: Simplify right side
    678,624.20x = 631,694,011,311.42
  5. Step 5: Solve for x
    x = 631,694,011,311.42/678,624.20
  6. Step 6: Final answer
    x = 930,845.10

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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.