Home / 611,922.90-918,212.40-256,972.80

Finding the Fourth Proportional to 611,922.90, 918,212.40 and 256,972.80

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Solution

The fourth proportional to 611,922.90, 918,212.40 and 256,972.80 is: 385,596.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,922.90 : 918,212.40 = 256,972.80 : x
  2. Step 2: Convert to fraction form
    611,922.90/918,212.40 = 256,972.80/x
  3. Step 3: Cross multiply
    611,922.90x = 918,212.40 × 256,972.80
  4. Step 4: Simplify right side
    611,922.90x = 235,955,611,422.72
  5. Step 5: Solve for x
    x = 235,955,611,422.72/611,922.90
  6. Step 6: Final answer
    x = 385,596.96

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1.5x scale

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.