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Finding the Fourth Proportional to 720,495.90, 1,080,742.32 and 676,651.98

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Solution

The fourth proportional to 720,495.90, 1,080,742.32 and 676,651.98 is: 1,014,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,495.90 : 1,080,742.32 = 676,651.98 : x
  2. Step 2: Convert to fraction form
    720,495.90/1,080,742.32 = 676,651.98/x
  3. Step 3: Cross multiply
    720,495.90x = 1,080,742.32 × 676,651.98
  4. Step 4: Simplify right side
    720,495.90x = 731,286,430,697.79
  5. Step 5: Solve for x
    x = 731,286,430,697.79/720,495.90
  6. Step 6: Final answer
    x = 1,014,976.53

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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.