Home / 680,743.20-1,021,114.80-470,791.20

Finding the Fourth Proportional to 680,743.20, 1,021,114.80 and 470,791.20

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Solution

The fourth proportional to 680,743.20, 1,021,114.80 and 470,791.20 is: 706,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,743.20 : 1,021,114.80 = 470,791.20 : x
  2. Step 2: Convert to fraction form
    680,743.20/1,021,114.80 = 470,791.20/x
  3. Step 3: Cross multiply
    680,743.20x = 1,021,114.80 × 470,791.20
  4. Step 4: Simplify right side
    680,743.20x = 480,731,862,029.76
  5. Step 5: Solve for x
    x = 480,731,862,029.76/680,743.20
  6. Step 6: Final answer
    x = 706,186.80

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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.