Home / 711,811.21-982,299.56-389,521.33

Finding the Fourth Proportional to 711,811.21, 982,299.56 and 389,521.33

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Solution

The fourth proportional to 711,811.21, 982,299.56 and 389,521.33 is: 537,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,811.21 : 982,299.56 = 389,521.33 : x
  2. Step 2: Convert to fraction form
    711,811.21/982,299.56 = 389,521.33/x
  3. Step 3: Cross multiply
    711,811.21x = 982,299.56 × 389,521.33
  4. Step 4: Simplify right side
    711,811.21x = 382,626,624,210.51
  5. Step 5: Solve for x
    x = 382,626,624,210.51/711,811.21
  6. Step 6: Final answer
    x = 537,539.48

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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.