Home / 657,653.79-986,558.45-208,395.39

Finding the Fourth Proportional to 657,653.79, 986,558.45 and 208,395.39

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Solution

The fourth proportional to 657,653.79, 986,558.45 and 208,395.39 is: 312,617.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,653.79 : 986,558.45 = 208,395.39 : x
  2. Step 2: Convert to fraction form
    657,653.79/986,558.45 = 208,395.39/x
  3. Step 3: Cross multiply
    657,653.79x = 986,558.45 × 208,395.39
  4. Step 4: Simplify right side
    657,653.79x = 205,594,231,903.57
  5. Step 5: Solve for x
    x = 205,594,231,903.57/657,653.79
  6. Step 6: Final answer
    x = 312,617.73

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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.