Home / 457,911.31-686,899.76-120,948.60

Finding the Fourth Proportional to 457,911.31, 686,899.76 and 120,948.60

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Solution

The fourth proportional to 457,911.31, 686,899.76 and 120,948.60 is: 181,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,911.31 : 686,899.76 = 120,948.60 : x
  2. Step 2: Convert to fraction form
    457,911.31/686,899.76 = 120,948.60/x
  3. Step 3: Cross multiply
    457,911.31x = 686,899.76 × 120,948.60
  4. Step 4: Simplify right side
    457,911.31x = 83,079,565,031.90
  5. Step 5: Solve for x
    x = 83,079,565,031.90/457,911.31
  6. Step 6: Final answer
    x = 181,431.56

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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.