Home / 825,500.25-1,137,647.80-643,924.57

Finding the Fourth Proportional to 825,500.25, 1,137,647.80 and 643,924.57

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Solution

The fourth proportional to 825,500.25, 1,137,647.80 and 643,924.57 is: 887,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,500.25 : 1,137,647.80 = 643,924.57 : x
  2. Step 2: Convert to fraction form
    825,500.25/1,137,647.80 = 643,924.57/x
  3. Step 3: Cross multiply
    825,500.25x = 1,137,647.80 × 643,924.57
  4. Step 4: Simplify right side
    825,500.25x = 732,559,370,426.45
  5. Step 5: Solve for x
    x = 732,559,370,426.45/825,500.25
  6. Step 6: Final answer
    x = 887,412.66

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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.