Home / 806,722.20-1,212,707.70-571,692.60

Finding the Fourth Proportional to 806,722.20, 1,212,707.70 and 571,692.60

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Solution

The fourth proportional to 806,722.20, 1,212,707.70 and 571,692.60 is: 859,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,722.20 : 1,212,707.70 = 571,692.60 : x
  2. Step 2: Convert to fraction form
    806,722.20/1,212,707.70 = 571,692.60/x
  3. Step 3: Cross multiply
    806,722.20x = 1,212,707.70 × 571,692.60
  4. Step 4: Simplify right side
    806,722.20x = 693,296,018,053.02
  5. Step 5: Solve for x
    x = 693,296,018,053.02/806,722.20
  6. Step 6: Final answer
    x = 859,398.71

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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.