Home / 657,386.82-986,083.07-208,109.86

Finding the Fourth Proportional to 657,386.82, 986,083.07 and 208,109.86

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Solution

The fourth proportional to 657,386.82, 986,083.07 and 208,109.86 is: 312,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,386.82 : 986,083.07 = 208,109.86 : x
  2. Step 2: Convert to fraction form
    657,386.82/986,083.07 = 208,109.86/x
  3. Step 3: Cross multiply
    657,386.82x = 986,083.07 × 208,109.86
  4. Step 4: Simplify right side
    657,386.82x = 205,213,606,140.31
  5. Step 5: Solve for x
    x = 205,213,606,140.31/657,386.82
  6. Step 6: Final answer
    x = 312,165.68

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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.