Home / 657,389.65-986,087.40-208,112.77

Finding the Fourth Proportional to 657,389.65, 986,087.40 and 208,112.77

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Solution

The fourth proportional to 657,389.65, 986,087.40 and 208,112.77 is: 312,170.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,389.65 : 986,087.40 = 208,112.77 : x
  2. Step 2: Convert to fraction form
    657,389.65/986,087.40 = 208,112.77/x
  3. Step 3: Cross multiply
    657,389.65x = 986,087.40 × 208,112.77
  4. Step 4: Simplify right side
    657,389.65x = 205,217,380,276.10
  5. Step 5: Solve for x
    x = 205,217,380,276.10/657,389.65
  6. Step 6: Final answer
    x = 312,170.08

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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.