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Finding the Fourth Proportional to 718,086.48, 990,901.08 and 416,299.92

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Solution

The fourth proportional to 718,086.48, 990,901.08 and 416,299.92 is: 574,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,086.48 : 990,901.08 = 416,299.92 : x
  2. Step 2: Convert to fraction form
    718,086.48/990,901.08 = 416,299.92/x
  3. Step 3: Cross multiply
    718,086.48x = 990,901.08 × 416,299.92
  4. Step 4: Simplify right side
    718,086.48x = 412,512,040,331.91
  5. Step 5: Solve for x
    x = 412,512,040,331.91/718,086.48
  6. Step 6: Final answer
    x = 574,460.11

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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.