Home / 770,006.20-1,155,009.30-209,110.20

Finding the Fourth Proportional to 770,006.20, 1,155,009.30 and 209,110.20

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Solution

The fourth proportional to 770,006.20, 1,155,009.30 and 209,110.20 is: 313,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,006.20 : 1,155,009.30 = 209,110.20 : x
  2. Step 2: Convert to fraction form
    770,006.20/1,155,009.30 = 209,110.20/x
  3. Step 3: Cross multiply
    770,006.20x = 1,155,009.30 × 209,110.20
  4. Step 4: Simplify right side
    770,006.20x = 241,524,225,724.86
  5. Step 5: Solve for x
    x = 241,524,225,724.86/770,006.20
  6. Step 6: Final answer
    x = 313,665.30

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Double scale
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Similar ratio
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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.