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Finding the Fourth Proportional to 570,785.76, 787,676.40 and 329,068.80

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Solution

The fourth proportional to 570,785.76, 787,676.40 and 329,068.80 is: 454,110.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,785.76 : 787,676.40 = 329,068.80 : x
  2. Step 2: Convert to fraction form
    570,785.76/787,676.40 = 329,068.80/x
  3. Step 3: Cross multiply
    570,785.76x = 787,676.40 × 329,068.80
  4. Step 4: Simplify right side
    570,785.76x = 259,199,727,736.32
  5. Step 5: Solve for x
    x = 259,199,727,736.32/570,785.76
  6. Step 6: Final answer
    x = 454,110.36

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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.