Home / 1,159,632.20-1,600,238.21-643,380.59

Finding the Fourth Proportional to 1,159,632.20, 1,600,238.21 and 643,380.59

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Solution

The fourth proportional to 1,159,632.20, 1,600,238.21 and 643,380.59 is: 887,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,632.20 : 1,600,238.21 = 643,380.59 : x
  2. Step 2: Convert to fraction form
    1,159,632.20/1,600,238.21 = 643,380.59/x
  3. Step 3: Cross multiply
    1,159,632.20x = 1,600,238.21 × 643,380.59
  4. Step 4: Simplify right side
    1,159,632.20x = 1,029,562,203,690.34
  5. Step 5: Solve for x
    x = 1,029,562,203,690.34/1,159,632.20
  6. Step 6: Final answer
    x = 887,835.13

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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.