Home / 711,977.31-982,521.12-385,283.12

Finding the Fourth Proportional to 711,977.31, 982,521.12 and 385,283.12

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Solution

The fourth proportional to 711,977.31, 982,521.12 and 385,283.12 is: 531,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,977.31 : 982,521.12 = 385,283.12 : x
  2. Step 2: Convert to fraction form
    711,977.31/982,521.12 = 385,283.12/x
  3. Step 3: Cross multiply
    711,977.31x = 982,521.12 × 385,283.12
  4. Step 4: Simplify right side
    711,977.31x = 378,548,799,111.70
  5. Step 5: Solve for x
    x = 378,548,799,111.70/711,977.31
  6. Step 6: Final answer
    x = 531,686.61

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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.