Home / 457,683.36-686,571.18-120,747.30

Finding the Fourth Proportional to 457,683.36, 686,571.18 and 120,747.30

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Solution

The fourth proportional to 457,683.36, 686,571.18 and 120,747.30 is: 181,133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,683.36 : 686,571.18 = 120,747.30 : x
  2. Step 2: Convert to fraction form
    457,683.36/686,571.18 = 120,747.30/x
  3. Step 3: Cross multiply
    457,683.36x = 686,571.18 × 120,747.30
  4. Step 4: Simplify right side
    457,683.36x = 82,901,616,242.81
  5. Step 5: Solve for x
    x = 82,901,616,242.81/457,683.36
  6. Step 6: Final answer
    x = 181,133.12

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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.