Home / 686,567.37-947,519.11-380,739.67

Finding the Fourth Proportional to 686,567.37, 947,519.11 and 380,739.67

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Solution

The fourth proportional to 686,567.37, 947,519.11 and 380,739.67 is: 525,451.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,567.37 : 947,519.11 = 380,739.67 : x
  2. Step 2: Convert to fraction form
    686,567.37/947,519.11 = 380,739.67/x
  3. Step 3: Cross multiply
    686,567.37x = 947,519.11 × 380,739.67
  4. Step 4: Simplify right side
    686,567.37x = 360,758,113,260.09
  5. Step 5: Solve for x
    x = 360,758,113,260.09/686,567.37
  6. Step 6: Final answer
    x = 525,451.88

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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.