Home / 641,724.18-885,997.16-412,369.84

Finding the Fourth Proportional to 641,724.18, 885,997.16 and 412,369.84

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Solution

The fourth proportional to 641,724.18, 885,997.16 and 412,369.84 is: 569,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,724.18 : 885,997.16 = 412,369.84 : x
  2. Step 2: Convert to fraction form
    641,724.18/885,997.16 = 412,369.84/x
  3. Step 3: Cross multiply
    641,724.18x = 885,997.16 × 412,369.84
  4. Step 4: Simplify right side
    641,724.18x = 365,358,507,701.69
  5. Step 5: Solve for x
    x = 365,358,507,701.69/641,724.18
  6. Step 6: Final answer
    x = 569,338.85

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1.5x scale

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.