Home / 717,844.88-990,669.36-395,554.48

Finding the Fourth Proportional to 717,844.88, 990,669.36 and 395,554.48

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Solution

The fourth proportional to 717,844.88, 990,669.36 and 395,554.48 is: 545,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,844.88 : 990,669.36 = 395,554.48 : x
  2. Step 2: Convert to fraction form
    717,844.88/990,669.36 = 395,554.48/x
  3. Step 3: Cross multiply
    717,844.88x = 990,669.36 × 395,554.48
  4. Step 4: Simplify right side
    717,844.88x = 391,863,703,546.73
  5. Step 5: Solve for x
    x = 391,863,703,546.73/717,844.88
  6. Step 6: Final answer
    x = 545,889.11

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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.