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Finding the Fourth Proportional to 808,608.60, 1,212,912.90 and 240,010.20

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Solution

The fourth proportional to 808,608.60, 1,212,912.90 and 240,010.20 is: 360,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,608.60 : 1,212,912.90 = 240,010.20 : x
  2. Step 2: Convert to fraction form
    808,608.60/1,212,912.90 = 240,010.20/x
  3. Step 3: Cross multiply
    808,608.60x = 1,212,912.90 × 240,010.20
  4. Step 4: Simplify right side
    808,608.60x = 291,111,467,711.58
  5. Step 5: Solve for x
    x = 291,111,467,711.58/808,608.60
  6. Step 6: Final answer
    x = 360,015.30

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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.