Home / 770,300.45-1,155,001.38-320,482.28

Finding the Fourth Proportional to 770,300.45, 1,155,001.38 and 320,482.28

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Solution

The fourth proportional to 770,300.45, 1,155,001.38 and 320,482.28 is: 480,536.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,300.45 : 1,155,001.38 = 320,482.28 : x
  2. Step 2: Convert to fraction form
    770,300.45/1,155,001.38 = 320,482.28/x
  3. Step 3: Cross multiply
    770,300.45x = 1,155,001.38 × 320,482.28
  4. Step 4: Simplify right side
    770,300.45x = 370,157,469,890.54
  5. Step 5: Solve for x
    x = 370,157,469,890.54/770,300.45
  6. Step 6: Final answer
    x = 480,536.49

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1.5x scale

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.