Home / 500,743.02-690,992.67-319,435.48

Finding the Fourth Proportional to 500,743.02, 690,992.67 and 319,435.48

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Solution

The fourth proportional to 500,743.02, 690,992.67 and 319,435.48 is: 440,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,743.02 : 690,992.67 = 319,435.48 : x
  2. Step 2: Convert to fraction form
    500,743.02/690,992.67 = 319,435.48/x
  3. Step 3: Cross multiply
    500,743.02x = 690,992.67 × 319,435.48
  4. Step 4: Simplify right side
    500,743.02x = 220,727,576,827.41
  5. Step 5: Solve for x
    x = 220,727,576,827.41/500,743.02
  6. Step 6: Final answer
    x = 440,800.11

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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.