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Finding the Fourth Proportional to 571,689.09, 788,874.05 and 330,049.65

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Solution

The fourth proportional to 571,689.09, 788,874.05 and 330,049.65 is: 455,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,689.09 : 788,874.05 = 330,049.65 : x
  2. Step 2: Convert to fraction form
    571,689.09/788,874.05 = 330,049.65/x
  3. Step 3: Cross multiply
    571,689.09x = 788,874.05 × 330,049.65
  4. Step 4: Simplify right side
    571,689.09x = 260,367,602,446.33
  5. Step 5: Solve for x
    x = 260,367,602,446.33/571,689.09
  6. Step 6: Final answer
    x = 455,435.67

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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.