Home / 806,656.40-1,209,984.60-680,685.20

Finding the Fourth Proportional to 806,656.40, 1,209,984.60 and 680,685.20

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Solution

The fourth proportional to 806,656.40, 1,209,984.60 and 680,685.20 is: 1,021,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,656.40 : 1,209,984.60 = 680,685.20 : x
  2. Step 2: Convert to fraction form
    806,656.40/1,209,984.60 = 680,685.20/x
  3. Step 3: Cross multiply
    806,656.40x = 1,209,984.60 × 680,685.20
  4. Step 4: Simplify right side
    806,656.40x = 823,618,609,447.92
  5. Step 5: Solve for x
    x = 823,618,609,447.92/806,656.40
  6. Step 6: Final answer
    x = 1,021,027.80

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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.