Home / 918,867.30-1,378,518.94-311,644.07

Finding the Fourth Proportional to 918,867.30, 1,378,518.94 and 311,644.07

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Solution

The fourth proportional to 918,867.30, 1,378,518.94 and 311,644.07 is: 467,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,867.30 : 1,378,518.94 = 311,644.07 : x
  2. Step 2: Convert to fraction form
    918,867.30/1,378,518.94 = 311,644.07/x
  3. Step 3: Cross multiply
    918,867.30x = 1,378,518.94 × 311,644.07
  4. Step 4: Simplify right side
    918,867.30x = 429,607,253,824.18
  5. Step 5: Solve for x
    x = 429,607,253,824.18/918,867.30
  6. Step 6: Final answer
    x = 467,540.04

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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.