Home / 689,276.95-1,033,915.80-215,999.35

Finding the Fourth Proportional to 689,276.95, 1,033,915.80 and 215,999.35

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Solution

The fourth proportional to 689,276.95, 1,033,915.80 and 215,999.35 is: 323,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,276.95 : 1,033,915.80 = 215,999.35 : x
  2. Step 2: Convert to fraction form
    689,276.95/1,033,915.80 = 215,999.35/x
  3. Step 3: Cross multiply
    689,276.95x = 1,033,915.80 × 215,999.35
  4. Step 4: Simplify right side
    689,276.95x = 223,325,140,754.73
  5. Step 5: Solve for x
    x = 223,325,140,754.73/689,276.95
  6. Step 6: Final answer
    x = 323,999.14

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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.