Home / 1,312,765.20-1,811,953.05-855,020.43

Finding the Fourth Proportional to 1,312,765.20, 1,811,953.05 and 855,020.43

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Solution

The fourth proportional to 1,312,765.20, 1,811,953.05 and 855,020.43 is: 1,180,147.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,765.20 : 1,811,953.05 = 855,020.43 : x
  2. Step 2: Convert to fraction form
    1,312,765.20/1,811,953.05 = 855,020.43/x
  3. Step 3: Cross multiply
    1,312,765.20x = 1,811,953.05 × 855,020.43
  4. Step 4: Simplify right side
    1,312,765.20x = 1,549,256,875,950.81
  5. Step 5: Solve for x
    x = 1,549,256,875,950.81/1,312,765.20
  6. Step 6: Final answer
    x = 1,180,147.73

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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.