Home / 717,742.58-990,507.12-411,874.98

Finding the Fourth Proportional to 717,742.58, 990,507.12 and 411,874.98

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Solution

The fourth proportional to 717,742.58, 990,507.12 and 411,874.98 is: 568,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,742.58 : 990,507.12 = 411,874.98 : x
  2. Step 2: Convert to fraction form
    717,742.58/990,507.12 = 411,874.98/x
  3. Step 3: Cross multiply
    717,742.58x = 990,507.12 × 411,874.98
  4. Step 4: Simplify right side
    717,742.58x = 407,965,100,239.86
  5. Step 5: Solve for x
    x = 407,965,100,239.86/717,742.58
  6. Step 6: Final answer
    x = 568,400.30

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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.