Home / 717,817.14-990,579.65-407,717.55

Finding the Fourth Proportional to 717,817.14, 990,579.65 and 407,717.55

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Solution

The fourth proportional to 717,817.14, 990,579.65 and 407,717.55 is: 562,645.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,817.14 : 990,579.65 = 407,717.55 : x
  2. Step 2: Convert to fraction form
    717,817.14/990,579.65 = 407,717.55/x
  3. Step 3: Cross multiply
    717,817.14x = 990,579.65 × 407,717.55
  4. Step 4: Simplify right side
    717,817.14x = 403,876,705,939.27
  5. Step 5: Solve for x
    x = 403,876,705,939.27/717,817.14
  6. Step 6: Final answer
    x = 562,645.67

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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.