Home / 770,007.20-1,155,010.80-209,111.20

Finding the Fourth Proportional to 770,007.20, 1,155,010.80 and 209,111.20

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Solution

The fourth proportional to 770,007.20, 1,155,010.80 and 209,111.20 is: 313,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,007.20 : 1,155,010.80 = 209,111.20 : x
  2. Step 2: Convert to fraction form
    770,007.20/1,155,010.80 = 209,111.20/x
  3. Step 3: Cross multiply
    770,007.20x = 1,155,010.80 × 209,111.20
  4. Step 4: Simplify right side
    770,007.20x = 241,525,694,400.96
  5. Step 5: Solve for x
    x = 241,525,694,400.96/770,007.20
  6. Step 6: Final answer
    x = 313,666.80

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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.