Home / 679,947.10-1,017,847.05-398,628.70

Finding the Fourth Proportional to 679,947.10, 1,017,847.05 and 398,628.70

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Solution

The fourth proportional to 679,947.10, 1,017,847.05 and 398,628.70 is: 596,727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,947.10 : 1,017,847.05 = 398,628.70 : x
  2. Step 2: Convert to fraction form
    679,947.10/1,017,847.05 = 398,628.70/x
  3. Step 3: Cross multiply
    679,947.10x = 1,017,847.05 × 398,628.70
  4. Step 4: Simplify right side
    679,947.10x = 405,743,046,340.34
  5. Step 5: Solve for x
    x = 405,743,046,340.34/679,947.10
  6. Step 6: Final answer
    x = 596,727.37

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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.