Home / 1,238,036.69-1,708,332.79-721,661.39

Finding the Fourth Proportional to 1,238,036.69, 1,708,332.79 and 721,661.39

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Solution

The fourth proportional to 1,238,036.69, 1,708,332.79 and 721,661.39 is: 995,800.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,036.69 : 1,708,332.79 = 721,661.39 : x
  2. Step 2: Convert to fraction form
    1,238,036.69/1,708,332.79 = 721,661.39/x
  3. Step 3: Cross multiply
    1,238,036.69x = 1,708,332.79 × 721,661.39
  4. Step 4: Simplify right side
    1,238,036.69x = 1,232,837,815,813.98
  5. Step 5: Solve for x
    x = 1,232,837,815,813.98/1,238,036.69
  6. Step 6: Final answer
    x = 995,800.71

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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.