Home / 692,390.43-1,038,643.97-219,065.31

Finding the Fourth Proportional to 692,390.43, 1,038,643.97 and 219,065.31

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Solution

The fourth proportional to 692,390.43, 1,038,643.97 and 219,065.31 is: 328,616.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,390.43 : 1,038,643.97 = 219,065.31 : x
  2. Step 2: Convert to fraction form
    692,390.43/1,038,643.97 = 219,065.31/x
  3. Step 3: Cross multiply
    692,390.43x = 1,038,643.97 × 219,065.31
  4. Step 4: Simplify right side
    692,390.43x = 227,530,862,172.35
  5. Step 5: Solve for x
    x = 227,530,862,172.35/692,390.43
  6. Step 6: Final answer
    x = 328,616.42

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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.