Home / 806,630.40-1,209,945.60-680,659.20

Finding the Fourth Proportional to 806,630.40, 1,209,945.60 and 680,659.20

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Solution

The fourth proportional to 806,630.40, 1,209,945.60 and 680,659.20 is: 1,020,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,630.40 : 1,209,945.60 = 680,659.20 : x
  2. Step 2: Convert to fraction form
    806,630.40/1,209,945.60 = 680,659.20/x
  3. Step 3: Cross multiply
    806,630.40x = 1,209,945.60 × 680,659.20
  4. Step 4: Simplify right side
    806,630.40x = 823,560,604,139.52
  5. Step 5: Solve for x
    x = 823,560,604,139.52/806,630.40
  6. Step 6: Final answer
    x = 1,020,988.80

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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.