Home / 711,786.36-982,265.14-389,496.48

Finding the Fourth Proportional to 711,786.36, 982,265.14 and 389,496.48

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Solution

The fourth proportional to 711,786.36, 982,265.14 and 389,496.48 is: 537,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,786.36 : 982,265.14 = 389,496.48 : x
  2. Step 2: Convert to fraction form
    711,786.36/982,265.14 = 389,496.48/x
  3. Step 3: Cross multiply
    711,786.36x = 982,265.14 × 389,496.48
  4. Step 4: Simplify right side
    711,786.36x = 382,588,807,597.90
  5. Step 5: Solve for x
    x = 382,588,807,597.90/711,786.36
  6. Step 6: Final answer
    x = 537,505.12

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Double scale
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1.5x scale

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.