Home / 1,312,780.80-1,811,592.73-724,103.57

Finding the Fourth Proportional to 1,312,780.80, 1,811,592.73 and 724,103.57

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Solution

The fourth proportional to 1,312,780.80, 1,811,592.73 and 724,103.57 is: 999,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,780.80 : 1,811,592.73 = 724,103.57 : x
  2. Step 2: Convert to fraction form
    1,312,780.80/1,811,592.73 = 724,103.57/x
  3. Step 3: Cross multiply
    1,312,780.80x = 1,811,592.73 × 724,103.57
  4. Step 4: Simplify right side
    1,312,780.80x = 1,311,780,768,613.16
  5. Step 5: Solve for x
    x = 1,311,780,768,613.16/1,312,780.80
  6. Step 6: Final answer
    x = 999,238.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.