Home / 711,684.10-982,123.41-389,395.54

Finding the Fourth Proportional to 711,684.10, 982,123.41 and 389,395.54

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Solution

The fourth proportional to 711,684.10, 982,123.41 and 389,395.54 is: 537,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,684.10 : 982,123.41 = 389,395.54 : x
  2. Step 2: Convert to fraction form
    711,684.10/982,123.41 = 389,395.54/x
  3. Step 3: Cross multiply
    711,684.10x = 982,123.41 × 389,395.54
  4. Step 4: Simplify right side
    711,684.10x = 382,434,475,583.59
  5. Step 5: Solve for x
    x = 382,434,475,583.59/711,684.10
  6. Step 6: Final answer
    x = 537,365.49

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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.