Home / 661,111.13-991,666.60-436,418.91

Finding the Fourth Proportional to 661,111.13, 991,666.60 and 436,418.91

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Solution

The fourth proportional to 661,111.13, 991,666.60 and 436,418.91 is: 654,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,111.13 : 991,666.60 = 436,418.91 : x
  2. Step 2: Convert to fraction form
    661,111.13/991,666.60 = 436,418.91/x
  3. Step 3: Cross multiply
    661,111.13x = 991,666.60 × 436,418.91
  4. Step 4: Simplify right side
    661,111.13x = 432,782,059,134.57
  5. Step 5: Solve for x
    x = 432,782,059,134.57/661,111.13
  6. Step 6: Final answer
    x = 654,628.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.