Home / 679,606.08-1,018,735.76-319,131.64

Finding the Fourth Proportional to 679,606.08, 1,018,735.76 and 319,131.64

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Solution

The fourth proportional to 679,606.08, 1,018,735.76 and 319,131.64 is: 478,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,606.08 : 1,018,735.76 = 319,131.64 : x
  2. Step 2: Convert to fraction form
    679,606.08/1,018,735.76 = 319,131.64/x
  3. Step 3: Cross multiply
    679,606.08x = 1,018,735.76 × 319,131.64
  4. Step 4: Simplify right side
    679,606.08x = 325,110,813,815.45
  5. Step 5: Solve for x
    x = 325,110,813,815.45/679,606.08
  6. Step 6: Final answer
    x = 478,381.26

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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.