Home / 712,196.72-982,831.70-389,927.29

Finding the Fourth Proportional to 712,196.72, 982,831.70 and 389,927.29

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Solution

The fourth proportional to 712,196.72, 982,831.70 and 389,927.29 is: 538,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,196.72 : 982,831.70 = 389,927.29 : x
  2. Step 2: Convert to fraction form
    712,196.72/982,831.70 = 389,927.29/x
  3. Step 3: Cross multiply
    712,196.72x = 982,831.70 × 389,927.29
  4. Step 4: Simplify right side
    712,196.72x = 383,232,901,307.09
  5. Step 5: Solve for x
    x = 383,232,901,307.09/712,196.72
  6. Step 6: Final answer
    x = 538,099.78

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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.