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Finding the Fourth Proportional to 720,492.90, 1,080,737.82 and 676,648.98

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Solution

The fourth proportional to 720,492.90, 1,080,737.82 and 676,648.98 is: 1,014,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,492.90 : 1,080,737.82 = 676,648.98 : x
  2. Step 2: Convert to fraction form
    720,492.90/1,080,737.82 = 676,648.98/x
  3. Step 3: Cross multiply
    720,492.90x = 1,080,737.82 × 676,648.98
  4. Step 4: Simplify right side
    720,492.90x = 731,280,143,550.42
  5. Step 5: Solve for x
    x = 731,280,143,550.42/720,492.90
  6. Step 6: Final answer
    x = 1,014,972.03

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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.