Home / 457,934.66-686,824.23-120,978.98

Finding the Fourth Proportional to 457,934.66, 686,824.23 and 120,978.98

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Solution

The fourth proportional to 457,934.66, 686,824.23 and 120,978.98 is: 181,447.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,934.66 : 686,824.23 = 120,978.98 : x
  2. Step 2: Convert to fraction form
    457,934.66/686,824.23 = 120,978.98/x
  3. Step 3: Cross multiply
    457,934.66x = 686,824.23 × 120,978.98
  4. Step 4: Simplify right side
    457,934.66x = 83,091,294,784.69
  5. Step 5: Solve for x
    x = 83,091,294,784.69/457,934.66
  6. Step 6: Final answer
    x = 181,447.93

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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.