Home / 820,856.40-1,231,284.60-803,360.40

Finding the Fourth Proportional to 820,856.40, 1,231,284.60 and 803,360.40

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Solution

The fourth proportional to 820,856.40, 1,231,284.60 and 803,360.40 is: 1,205,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,856.40 : 1,231,284.60 = 803,360.40 : x
  2. Step 2: Convert to fraction form
    820,856.40/1,231,284.60 = 803,360.40/x
  3. Step 3: Cross multiply
    820,856.40x = 1,231,284.60 × 803,360.40
  4. Step 4: Simplify right side
    820,856.40x = 989,165,288,769.84
  5. Step 5: Solve for x
    x = 989,165,288,769.84/820,856.40
  6. Step 6: Final answer
    x = 1,205,040.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.