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Finding the Fourth Proportional to 614,790.90, 921,202.20 and 404,182.80

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Solution

The fourth proportional to 614,790.90, 921,202.20 and 404,182.80 is: 605,627.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,790.90 : 921,202.20 = 404,182.80 : x
  2. Step 2: Convert to fraction form
    614,790.90/921,202.20 = 404,182.80/x
  3. Step 3: Cross multiply
    614,790.90x = 921,202.20 × 404,182.80
  4. Step 4: Simplify right side
    614,790.90x = 372,334,084,562.16
  5. Step 5: Solve for x
    x = 372,334,084,562.16/614,790.90
  6. Step 6: Final answer
    x = 605,627.19

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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.