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Finding the Fourth Proportional to 718,018.94, 990,905.12 and 412,092.87

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Solution

The fourth proportional to 718,018.94, 990,905.12 and 412,092.87 is: 568,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,018.94 : 990,905.12 = 412,092.87 : x
  2. Step 2: Convert to fraction form
    718,018.94/990,905.12 = 412,092.87/x
  3. Step 3: Cross multiply
    718,018.94x = 990,905.12 × 412,092.87
  4. Step 4: Simplify right side
    718,018.94x = 408,344,932,738.03
  5. Step 5: Solve for x
    x = 408,344,932,738.03/718,018.94
  6. Step 6: Final answer
    x = 568,710.54

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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.