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Finding the Fourth Proportional to 579,360.12, 799,504.86 and 317,711.64

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Solution

The fourth proportional to 579,360.12, 799,504.86 and 317,711.64 is: 438,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,360.12 : 799,504.86 = 317,711.64 : x
  2. Step 2: Convert to fraction form
    579,360.12/799,504.86 = 317,711.64/x
  3. Step 3: Cross multiply
    579,360.12x = 799,504.86 × 317,711.64
  4. Step 4: Simplify right side
    579,360.12x = 254,012,000,258.57
  5. Step 5: Solve for x
    x = 254,012,000,258.57/579,360.12
  6. Step 6: Final answer
    x = 438,435.42

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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.