Home / 711,862.56-982,399.59-389,600.82

Finding the Fourth Proportional to 711,862.56, 982,399.59 and 389,600.82

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Solution

The fourth proportional to 711,862.56, 982,399.59 and 389,600.82 is: 537,665.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,862.56 : 982,399.59 = 389,600.82 : x
  2. Step 2: Convert to fraction form
    711,862.56/982,399.59 = 389,600.82/x
  3. Step 3: Cross multiply
    711,862.56x = 982,399.59 × 389,600.82
  4. Step 4: Simplify right side
    711,862.56x = 382,743,685,831.66
  5. Step 5: Solve for x
    x = 382,743,685,831.66/711,862.56
  6. Step 6: Final answer
    x = 537,665.14

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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.