Home / 805,438.32-1,111,481.88-442,861.68

Finding the Fourth Proportional to 805,438.32, 1,111,481.88 and 442,861.68

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Solution

The fourth proportional to 805,438.32, 1,111,481.88 and 442,861.68 is: 611,136.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,438.32 : 1,111,481.88 = 442,861.68 : x
  2. Step 2: Convert to fraction form
    805,438.32/1,111,481.88 = 442,861.68/x
  3. Step 3: Cross multiply
    805,438.32x = 1,111,481.88 × 442,861.68
  4. Step 4: Simplify right side
    805,438.32x = 492,232,732,666.36
  5. Step 5: Solve for x
    x = 492,232,732,666.36/805,438.32
  6. Step 6: Final answer
    x = 611,136.47

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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.