Home / 1,119,813.70-1,679,720.55-665,136.40

Finding the Fourth Proportional to 1,119,813.70, 1,679,720.55 and 665,136.40

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Solution

The fourth proportional to 1,119,813.70, 1,679,720.55 and 665,136.40 is: 997,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,813.70 : 1,679,720.55 = 665,136.40 : x
  2. Step 2: Convert to fraction form
    1,119,813.70/1,679,720.55 = 665,136.40/x
  3. Step 3: Cross multiply
    1,119,813.70x = 1,679,720.55 × 665,136.40
  4. Step 4: Simplify right side
    1,119,813.70x = 1,117,243,279,633.02
  5. Step 5: Solve for x
    x = 1,117,243,279,633.02/1,119,813.70
  6. Step 6: Final answer
    x = 997,704.60

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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.