Home / 717,904.44-990,714.78-395,626.10

Finding the Fourth Proportional to 717,904.44, 990,714.78 and 395,626.10

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Solution

The fourth proportional to 717,904.44, 990,714.78 and 395,626.10 is: 545,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,904.44 : 990,714.78 = 395,626.10 : x
  2. Step 2: Convert to fraction form
    717,904.44/990,714.78 = 395,626.10/x
  3. Step 3: Cross multiply
    717,904.44x = 990,714.78 × 395,626.10
  4. Step 4: Simplify right side
    717,904.44x = 391,952,619,670.18
  5. Step 5: Solve for x
    x = 391,952,619,670.18/717,904.44
  6. Step 6: Final answer
    x = 545,967.68

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Double scale
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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.