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Finding the Fourth Proportional to 667,246.72, 920,802.30 and 361,326.68

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Solution

The fourth proportional to 667,246.72, 920,802.30 and 361,326.68 is: 498,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,246.72 : 920,802.30 = 361,326.68 : x
  2. Step 2: Convert to fraction form
    667,246.72/920,802.30 = 361,326.68/x
  3. Step 3: Cross multiply
    667,246.72x = 920,802.30 × 361,326.68
  4. Step 4: Simplify right side
    667,246.72x = 332,710,437,995.36
  5. Step 5: Solve for x
    x = 332,710,437,995.36/667,246.72
  6. Step 6: Final answer
    x = 498,631.81

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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.