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Finding the Fourth Proportional to 840,417.50, 1,260,637.19 and 279,452

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Solution

The fourth proportional to 840,417.50, 1,260,637.19 and 279,452 is: 419,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,417.50 : 1,260,637.19 = 279,452 : x
  2. Step 2: Convert to fraction form
    840,417.50/1,260,637.19 = 279,452/x
  3. Step 3: Cross multiply
    840,417.50x = 1,260,637.19 × 279,452
  4. Step 4: Simplify right side
    840,417.50x = 352,287,584,019.88
  5. Step 5: Solve for x
    x = 352,287,584,019.88/840,417.50
  6. Step 6: Final answer
    x = 419,181.64

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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.