Home / 717,904.14-990,714.21-395,625.78

Finding the Fourth Proportional to 717,904.14, 990,714.21 and 395,625.78

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Solution

The fourth proportional to 717,904.14, 990,714.21 and 395,625.78 is: 545,967.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,904.14 : 990,714.21 = 395,625.78 : x
  2. Step 2: Convert to fraction form
    717,904.14/990,714.21 = 395,625.78/x
  3. Step 3: Cross multiply
    717,904.14x = 990,714.21 × 395,625.78
  4. Step 4: Simplify right side
    717,904.14x = 391,952,082,088.33
  5. Step 5: Solve for x
    x = 391,952,082,088.33/717,904.14
  6. Step 6: Final answer
    x = 545,967.16

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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.