Home / 686,065.34-1,028,912.12-286,622.55

Finding the Fourth Proportional to 686,065.34, 1,028,912.12 and 286,622.55

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Solution

The fourth proportional to 686,065.34, 1,028,912.12 and 286,622.55 is: 429,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,065.34 : 1,028,912.12 = 286,622.55 : x
  2. Step 2: Convert to fraction form
    686,065.34/1,028,912.12 = 286,622.55/x
  3. Step 3: Cross multiply
    686,065.34x = 1,028,912.12 × 286,622.55
  4. Step 4: Simplify right side
    686,065.34x = 294,909,415,202.03
  5. Step 5: Solve for x
    x = 294,909,415,202.03/686,065.34
  6. Step 6: Final answer
    x = 429,856.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.