Home / 692,355.22-1,038,428.95-218,979.07

Finding the Fourth Proportional to 692,355.22, 1,038,428.95 and 218,979.07

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Solution

The fourth proportional to 692,355.22, 1,038,428.95 and 218,979.07 is: 328,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,355.22 : 1,038,428.95 = 218,979.07 : x
  2. Step 2: Convert to fraction form
    692,355.22/1,038,428.95 = 218,979.07/x
  3. Step 3: Cross multiply
    692,355.22x = 1,038,428.95 × 218,979.07
  4. Step 4: Simplify right side
    692,355.22x = 227,394,205,611.80
  5. Step 5: Solve for x
    x = 227,394,205,611.80/692,355.22
  6. Step 6: Final answer
    x = 328,435.75

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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.