Home / 661,221.24-912,585.05-403,247.85

Finding the Fourth Proportional to 661,221.24, 912,585.05 and 403,247.85

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Solution

The fourth proportional to 661,221.24, 912,585.05 and 403,247.85 is: 556,542.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,221.24 : 912,585.05 = 403,247.85 : x
  2. Step 2: Convert to fraction form
    661,221.24/912,585.05 = 403,247.85/x
  3. Step 3: Cross multiply
    661,221.24x = 912,585.05 × 403,247.85
  4. Step 4: Simplify right side
    661,221.24x = 367,997,959,354.64
  5. Step 5: Solve for x
    x = 367,997,959,354.64/661,221.24
  6. Step 6: Final answer
    x = 556,542.86

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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.