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Finding the Fourth Proportional to 840,920.80, 1,260,992.40 and 367,362.40

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Solution

The fourth proportional to 840,920.80, 1,260,992.40 and 367,362.40 is: 550,873.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,920.80 : 1,260,992.40 = 367,362.40 : x
  2. Step 2: Convert to fraction form
    840,920.80/1,260,992.40 = 367,362.40/x
  3. Step 3: Cross multiply
    840,920.80x = 1,260,992.40 × 367,362.40
  4. Step 4: Simplify right side
    840,920.80x = 463,241,194,445.76
  5. Step 5: Solve for x
    x = 463,241,194,445.76/840,920.80
  6. Step 6: Final answer
    x = 550,873.75

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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.