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Finding the Fourth Proportional to 614,418.60, 921,627.90 and 401,842.20

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Solution

The fourth proportional to 614,418.60, 921,627.90 and 401,842.20 is: 602,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,418.60 : 921,627.90 = 401,842.20 : x
  2. Step 2: Convert to fraction form
    614,418.60/921,627.90 = 401,842.20/x
  3. Step 3: Cross multiply
    614,418.60x = 921,627.90 × 401,842.20
  4. Step 4: Simplify right side
    614,418.60x = 370,348,982,917.38
  5. Step 5: Solve for x
    x = 370,348,982,917.38/614,418.60
  6. Step 6: Final answer
    x = 602,763.30

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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.