Home / 1,188,000.30-1,782,000.45-740,102.70

Finding the Fourth Proportional to 1,188,000.30, 1,782,000.45 and 740,102.70

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Solution

The fourth proportional to 1,188,000.30, 1,782,000.45 and 740,102.70 is: 1,110,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,000.30 : 1,782,000.45 = 740,102.70 : x
  2. Step 2: Convert to fraction form
    1,188,000.30/1,782,000.45 = 740,102.70/x
  3. Step 3: Cross multiply
    1,188,000.30x = 1,782,000.45 × 740,102.70
  4. Step 4: Simplify right side
    1,188,000.30x = 1,318,863,344,446.21
  5. Step 5: Solve for x
    x = 1,318,863,344,446.21/1,188,000.30
  6. Step 6: Final answer
    x = 1,110,154.05

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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.