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Finding the Fourth Proportional to 667,275.94, 920,841.27 and 361,354.72

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Solution

The fourth proportional to 667,275.94, 920,841.27 and 361,354.72 is: 498,669.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,275.94 : 920,841.27 = 361,354.72 : x
  2. Step 2: Convert to fraction form
    667,275.94/920,841.27 = 361,354.72/x
  3. Step 3: Cross multiply
    667,275.94x = 920,841.27 × 361,354.72
  4. Step 4: Simplify right side
    667,275.94x = 332,750,339,285.29
  5. Step 5: Solve for x
    x = 332,750,339,285.29/667,275.94
  6. Step 6: Final answer
    x = 498,669.77

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1.5x scale

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.