Home / 928,885.05-1,281,865.91-521,008.69

Finding the Fourth Proportional to 928,885.05, 1,281,865.91 and 521,008.69

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Solution

The fourth proportional to 928,885.05, 1,281,865.91 and 521,008.69 is: 718,994.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,885.05 : 1,281,865.91 = 521,008.69 : x
  2. Step 2: Convert to fraction form
    928,885.05/1,281,865.91 = 521,008.69/x
  3. Step 3: Cross multiply
    928,885.05x = 1,281,865.91 × 521,008.69
  4. Step 4: Simplify right side
    928,885.05x = 667,863,283,119.81
  5. Step 5: Solve for x
    x = 667,863,283,119.81/928,885.05
  6. Step 6: Final answer
    x = 718,994.54

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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.