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Finding the Fourth Proportional to 614,770.90, 921,172.20 and 404,162.80

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Solution

The fourth proportional to 614,770.90, 921,172.20 and 404,162.80 is: 605,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,770.90 : 921,172.20 = 404,162.80 : x
  2. Step 2: Convert to fraction form
    614,770.90/921,172.20 = 404,162.80/x
  3. Step 3: Cross multiply
    614,770.90x = 921,172.20 × 404,162.80
  4. Step 4: Simplify right side
    614,770.90x = 372,303,535,634.16
  5. Step 5: Solve for x
    x = 372,303,535,634.16/614,770.90
  6. Step 6: Final answer
    x = 605,597.20

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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.