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Finding the Fourth Proportional to 717,857.73, 990,643.76 and 416,226.69

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Solution

The fourth proportional to 717,857.73, 990,643.76 and 416,226.69 is: 574,392.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,857.73 : 990,643.76 = 416,226.69 : x
  2. Step 2: Convert to fraction form
    717,857.73/990,643.76 = 416,226.69/x
  3. Step 3: Cross multiply
    717,857.73x = 990,643.76 × 416,226.69
  4. Step 4: Simplify right side
    717,857.73x = 412,332,371,112.82
  5. Step 5: Solve for x
    x = 412,332,371,112.82/717,857.73
  6. Step 6: Final answer
    x = 574,392.88

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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.