Home / 805,890.81-1,112,131.88-443,342.24

Finding the Fourth Proportional to 805,890.81, 1,112,131.88 and 443,342.24

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Solution

The fourth proportional to 805,890.81, 1,112,131.88 and 443,342.24 is: 611,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,890.81 : 1,112,131.88 = 443,342.24 : x
  2. Step 2: Convert to fraction form
    805,890.81/1,112,131.88 = 443,342.24/x
  3. Step 3: Cross multiply
    805,890.81x = 1,112,131.88 × 443,342.24
  4. Step 4: Simplify right side
    805,890.81x = 493,055,031,077.24
  5. Step 5: Solve for x
    x = 493,055,031,077.24/805,890.81
  6. Step 6: Final answer
    x = 611,813.69

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Double scale
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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.