Home / 1,291,108.80-1,936,663.20-659,812.80

Finding the Fourth Proportional to 1,291,108.80, 1,936,663.20 and 659,812.80

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Solution

The fourth proportional to 1,291,108.80, 1,936,663.20 and 659,812.80 is: 989,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,108.80 : 1,936,663.20 = 659,812.80 : x
  2. Step 2: Convert to fraction form
    1,291,108.80/1,936,663.20 = 659,812.80/x
  3. Step 3: Cross multiply
    1,291,108.80x = 1,936,663.20 × 659,812.80
  4. Step 4: Simplify right side
    1,291,108.80x = 1,277,835,168,648.96
  5. Step 5: Solve for x
    x = 1,277,835,168,648.96/1,291,108.80
  6. Step 6: Final answer
    x = 989,719.20

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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.