Home / 806,435.40-1,112,896.08-443,856.72

Finding the Fourth Proportional to 806,435.40, 1,112,896.08 and 443,856.72

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Solution

The fourth proportional to 806,435.40, 1,112,896.08 and 443,856.72 is: 612,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,435.40 : 1,112,896.08 = 443,856.72 : x
  2. Step 2: Convert to fraction form
    806,435.40/1,112,896.08 = 443,856.72/x
  3. Step 3: Cross multiply
    806,435.40x = 1,112,896.08 × 443,856.72
  4. Step 4: Simplify right side
    806,435.40x = 493,966,403,769.66
  5. Step 5: Solve for x
    x = 493,966,403,769.66/806,435.40
  6. Step 6: Final answer
    x = 612,530.65

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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.