Home / 1,123,393.68-1,549,904.76-639,616.59

Finding the Fourth Proportional to 1,123,393.68, 1,549,904.76 and 639,616.59

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Solution

The fourth proportional to 1,123,393.68, 1,549,904.76 and 639,616.59 is: 882,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,393.68 : 1,549,904.76 = 639,616.59 : x
  2. Step 2: Convert to fraction form
    1,123,393.68/1,549,904.76 = 639,616.59/x
  3. Step 3: Cross multiply
    1,123,393.68x = 1,549,904.76 × 639,616.59
  4. Step 4: Simplify right side
    1,123,393.68x = 991,344,797,415.97
  5. Step 5: Solve for x
    x = 991,344,797,415.97/1,123,393.68
  6. Step 6: Final answer
    x = 882,455.38

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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.