Home / 674,391.69-1,012,086.27-319,406.31

Finding the Fourth Proportional to 674,391.69, 1,012,086.27 and 319,406.31

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Solution

The fourth proportional to 674,391.69, 1,012,086.27 and 319,406.31 is: 479,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,391.69 : 1,012,086.27 = 319,406.31 : x
  2. Step 2: Convert to fraction form
    674,391.69/1,012,086.27 = 319,406.31/x
  3. Step 3: Cross multiply
    674,391.69x = 1,012,086.27 × 319,406.31
  4. Step 4: Simplify right side
    674,391.69x = 323,266,740,902.36
  5. Step 5: Solve for x
    x = 323,266,740,902.36/674,391.69
  6. Step 6: Final answer
    x = 479,345.68

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1.5x scale

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.