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Finding the Fourth Proportional to 452,679.63, 679,016.79 and 115,719.81

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Solution

The fourth proportional to 452,679.63, 679,016.79 and 115,719.81 is: 173,579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,679.63 : 679,016.79 = 115,719.81 : x
  2. Step 2: Convert to fraction form
    452,679.63/679,016.79 = 115,719.81/x
  3. Step 3: Cross multiply
    452,679.63x = 679,016.79 × 115,719.81
  4. Step 4: Simplify right side
    452,679.63x = 78,575,693,925.61
  5. Step 5: Solve for x
    x = 78,575,693,925.61/452,679.63
  6. Step 6: Final answer
    x = 173,579.04

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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.