Home / 657,982.80-987,233.40-258,555.60

Finding the Fourth Proportional to 657,982.80, 987,233.40 and 258,555.60

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Solution

The fourth proportional to 657,982.80, 987,233.40 and 258,555.60 is: 387,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,982.80 : 987,233.40 = 258,555.60 : x
  2. Step 2: Convert to fraction form
    657,982.80/987,233.40 = 258,555.60/x
  3. Step 3: Cross multiply
    657,982.80x = 987,233.40 × 258,555.60
  4. Step 4: Simplify right side
    657,982.80x = 255,254,724,077.04
  5. Step 5: Solve for x
    x = 255,254,724,077.04/657,982.80
  6. Step 6: Final answer
    x = 387,935.25

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Double scale
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Similar ratio
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1.5x scale

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.