Home / 712,193,834.88-982,833,263.73-394,659,385.56

Finding the Fourth Proportional to 712,193,834.88, 982,833,263.73 and 394,659,385.56

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Solution

The fourth proportional to 712,193,834.88, 982,833,263.73 and 394,659,385.56 is: 544,633,150.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,193,834.88 : 982,833,263.73 = 394,659,385.56 : x
  2. Step 2: Convert to fraction form
    712,193,834.88/982,833,263.73 = 394,659,385.56/x
  3. Step 3: Cross multiply
    712,193,834.88x = 982,833,263.73 × 394,659,385.56
  4. Step 4: Simplify right side
    712,193,834.88x = 387,884,371,971,611,264
  5. Step 5: Solve for x
    x = 387,884,371,971,611,264/712,193,834.88
  6. Step 6: Final answer
    x = 544,633,150.38

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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.