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Finding the Fourth Proportional to 638,970.46, 881,774.31 and 352,502.62

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Solution

The fourth proportional to 638,970.46, 881,774.31 and 352,502.62 is: 486,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,970.46 : 881,774.31 = 352,502.62 : x
  2. Step 2: Convert to fraction form
    638,970.46/881,774.31 = 352,502.62/x
  3. Step 3: Cross multiply
    638,970.46x = 881,774.31 × 352,502.62
  4. Step 4: Simplify right side
    638,970.46x = 310,827,754,523.69
  5. Step 5: Solve for x
    x = 310,827,754,523.69/638,970.46
  6. Step 6: Final answer
    x = 486,450.90

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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.