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Finding the Fourth Proportional to 662,507.30, 993,739.77 and 278,459.62

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Solution

The fourth proportional to 662,507.30, 993,739.77 and 278,459.62 is: 417,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,507.30 : 993,739.77 = 278,459.62 : x
  2. Step 2: Convert to fraction form
    662,507.30/993,739.77 = 278,459.62/x
  3. Step 3: Cross multiply
    662,507.30x = 993,739.77 × 278,459.62
  4. Step 4: Simplify right side
    662,507.30x = 276,716,401,055.36
  5. Step 5: Solve for x
    x = 276,716,401,055.36/662,507.30
  6. Step 6: Final answer
    x = 417,680.53

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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.