Home / 688,605.12-1,032,967.22-189,969.12

Finding the Fourth Proportional to 688,605.12, 1,032,967.22 and 189,969.12

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Solution

The fourth proportional to 688,605.12, 1,032,967.22 and 189,969.12 is: 284,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,605.12 : 1,032,967.22 = 189,969.12 : x
  2. Step 2: Convert to fraction form
    688,605.12/1,032,967.22 = 189,969.12/x
  3. Step 3: Cross multiply
    688,605.12x = 1,032,967.22 × 189,969.12
  4. Step 4: Simplify right side
    688,605.12x = 196,231,873,772.25
  5. Step 5: Solve for x
    x = 196,231,873,772.25/688,605.12
  6. Step 6: Final answer
    x = 284,970.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.