Home / 674,321.36-1,011,979.74-319,334.72

Finding the Fourth Proportional to 674,321.36, 1,011,979.74 and 319,334.72

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Solution

The fourth proportional to 674,321.36, 1,011,979.74 and 319,334.72 is: 479,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,321.36 : 1,011,979.74 = 319,334.72 : x
  2. Step 2: Convert to fraction form
    674,321.36/1,011,979.74 = 319,334.72/x
  3. Step 3: Cross multiply
    674,321.36x = 1,011,979.74 × 319,334.72
  4. Step 4: Simplify right side
    674,321.36x = 323,160,266,918.57
  5. Step 5: Solve for x
    x = 323,160,266,918.57/674,321.36
  6. Step 6: Final answer
    x = 479,237.77

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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.