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Finding the Fourth Proportional to 638,950.65, 881,754.36 and 352,466.61

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Solution

The fourth proportional to 638,950.65, 881,754.36 and 352,466.61 is: 486,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,950.65 : 881,754.36 = 352,466.61 : x
  2. Step 2: Convert to fraction form
    638,950.65/881,754.36 = 352,466.61/x
  3. Step 3: Cross multiply
    638,950.65x = 881,754.36 × 352,466.61
  4. Step 4: Simplify right side
    638,950.65x = 310,788,963,950.82
  5. Step 5: Solve for x
    x = 310,788,963,950.82/638,950.65
  6. Step 6: Final answer
    x = 486,405.27

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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.