Home / 805,321.49-1,111,351.13-442,747.90

Finding the Fourth Proportional to 805,321.49, 1,111,351.13 and 442,747.90

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Solution

The fourth proportional to 805,321.49, 1,111,351.13 and 442,747.90 is: 610,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,321.49 : 1,111,351.13 = 442,747.90 : x
  2. Step 2: Convert to fraction form
    805,321.49/1,111,351.13 = 442,747.90/x
  3. Step 3: Cross multiply
    805,321.49x = 1,111,351.13 × 442,747.90
  4. Step 4: Simplify right side
    805,321.49x = 492,048,377,769.81
  5. Step 5: Solve for x
    x = 492,048,377,769.81/805,321.49
  6. Step 6: Final answer
    x = 610,996.21

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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.