Home / 1,118,704.80-1,678,057.20-645,000.60

Finding the Fourth Proportional to 1,118,704.80, 1,678,057.20 and 645,000.60

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Solution

The fourth proportional to 1,118,704.80, 1,678,057.20 and 645,000.60 is: 967,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,704.80 : 1,678,057.20 = 645,000.60 : x
  2. Step 2: Convert to fraction form
    1,118,704.80/1,678,057.20 = 645,000.60/x
  3. Step 3: Cross multiply
    1,118,704.80x = 1,678,057.20 × 645,000.60
  4. Step 4: Simplify right side
    1,118,704.80x = 1,082,347,900,834.32
  5. Step 5: Solve for x
    x = 1,082,347,900,834.32/1,118,704.80
  6. Step 6: Final answer
    x = 967,500.90

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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.