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Finding the Fourth Proportional to 614,802.40, 921,219.45 and 404,194.30

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Solution

The fourth proportional to 614,802.40, 921,219.45 and 404,194.30 is: 605,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,802.40 : 921,219.45 = 404,194.30 : x
  2. Step 2: Convert to fraction form
    614,802.40/921,219.45 = 404,194.30/x
  3. Step 3: Cross multiply
    614,802.40x = 921,219.45 × 404,194.30
  4. Step 4: Simplify right side
    614,802.40x = 372,351,650,739.14
  5. Step 5: Solve for x
    x = 372,351,650,739.14/614,802.40
  6. Step 6: Final answer
    x = 605,644.43

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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.