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Finding the Fourth Proportional to 717,661, 990,372.18 and 416,029.96

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Solution

The fourth proportional to 717,661, 990,372.18 and 416,029.96 is: 574,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,661 : 990,372.18 = 416,029.96 : x
  2. Step 2: Convert to fraction form
    717,661/990,372.18 = 416,029.96/x
  3. Step 3: Cross multiply
    717,661x = 990,372.18 × 416,029.96
  4. Step 4: Simplify right side
    717,661x = 412,024,498,430.51
  5. Step 5: Solve for x
    x = 412,024,498,430.51/717,661
  6. Step 6: Final answer
    x = 574,121.34

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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.