Home / 711,811.42-982,299.86-389,521.59

Finding the Fourth Proportional to 711,811.42, 982,299.86 and 389,521.59

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Solution

The fourth proportional to 711,811.42, 982,299.86 and 389,521.59 is: 537,539.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,811.42 : 982,299.86 = 389,521.59 : x
  2. Step 2: Convert to fraction form
    711,811.42/982,299.86 = 389,521.59/x
  3. Step 3: Cross multiply
    711,811.42x = 982,299.86 × 389,521.59
  4. Step 4: Simplify right side
    711,811.42x = 382,627,003,323.98
  5. Step 5: Solve for x
    x = 382,627,003,323.98/711,811.42
  6. Step 6: Final answer
    x = 537,539.85

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Double scale
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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.