Home / 1,317,811.80-1,976,717.70-869,136.60

Finding the Fourth Proportional to 1,317,811.80, 1,976,717.70 and 869,136.60

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Solution

The fourth proportional to 1,317,811.80, 1,976,717.70 and 869,136.60 is: 1,303,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,811.80 : 1,976,717.70 = 869,136.60 : x
  2. Step 2: Convert to fraction form
    1,317,811.80/1,976,717.70 = 869,136.60/x
  3. Step 3: Cross multiply
    1,317,811.80x = 1,976,717.70 × 869,136.60
  4. Step 4: Simplify right side
    1,317,811.80x = 1,718,037,700,937.82
  5. Step 5: Solve for x
    x = 1,718,037,700,937.82/1,317,811.80
  6. Step 6: Final answer
    x = 1,303,704.90

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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.