Home / 712,184.20-982,814.45-389,914.76

Finding the Fourth Proportional to 712,184.20, 982,814.45 and 389,914.76

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Solution

The fourth proportional to 712,184.20, 982,814.45 and 389,914.76 is: 538,082.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,184.20 : 982,814.45 = 389,914.76 : x
  2. Step 2: Convert to fraction form
    712,184.20/982,814.45 = 389,914.76/x
  3. Step 3: Cross multiply
    712,184.20x = 982,814.45 × 389,914.76
  4. Step 4: Simplify right side
    712,184.20x = 383,213,860,903.74
  5. Step 5: Solve for x
    x = 383,213,860,903.74/712,184.20
  6. Step 6: Final answer
    x = 538,082.51

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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.