Home / 1,159,690.12-1,600,385.34-643,453.36

Finding the Fourth Proportional to 1,159,690.12, 1,600,385.34 and 643,453.36

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Solution

The fourth proportional to 1,159,690.12, 1,600,385.34 and 643,453.36 is: 887,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,690.12 : 1,600,385.34 = 643,453.36 : x
  2. Step 2: Convert to fraction form
    1,159,690.12/1,600,385.34 = 643,453.36/x
  3. Step 3: Cross multiply
    1,159,690.12x = 1,600,385.34 × 643,453.36
  4. Step 4: Simplify right side
    1,159,690.12x = 1,029,773,324,317.74
  5. Step 5: Solve for x
    x = 1,029,773,324,317.74/1,159,690.12
  6. Step 6: Final answer
    x = 887,972.84

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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.