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Finding the Fourth Proportional to 806,570.80, 1,209,856.20 and 794,129.20

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Solution

The fourth proportional to 806,570.80, 1,209,856.20 and 794,129.20 is: 1,191,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,570.80 : 1,209,856.20 = 794,129.20 : x
  2. Step 2: Convert to fraction form
    806,570.80/1,209,856.20 = 794,129.20/x
  3. Step 3: Cross multiply
    806,570.80x = 1,209,856.20 × 794,129.20
  4. Step 4: Simplify right side
    806,570.80x = 960,782,136,221.04
  5. Step 5: Solve for x
    x = 960,782,136,221.04/806,570.80
  6. Step 6: Final answer
    x = 1,191,193.80

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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.