Home / 406,530.25-561,206.76-285,775.05

Finding the Fourth Proportional to 406,530.25, 561,206.76 and 285,775.05

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Solution

The fourth proportional to 406,530.25, 561,206.76 and 285,775.05 is: 394,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,530.25 : 561,206.76 = 285,775.05 : x
  2. Step 2: Convert to fraction form
    406,530.25/561,206.76 = 285,775.05/x
  3. Step 3: Cross multiply
    406,530.25x = 561,206.76 × 285,775.05
  4. Step 4: Simplify right side
    406,530.25x = 160,378,889,899.34
  5. Step 5: Solve for x
    x = 160,378,889,899.34/406,530.25
  6. Step 6: Final answer
    x = 394,506.66

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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.