Home / 985,727.58-1,478,645.18-311,758.57

Finding the Fourth Proportional to 985,727.58, 1,478,645.18 and 311,758.57

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Solution

The fourth proportional to 985,727.58, 1,478,645.18 and 311,758.57 is: 467,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,727.58 : 1,478,645.18 = 311,758.57 : x
  2. Step 2: Convert to fraction form
    985,727.58/1,478,645.18 = 311,758.57/x
  3. Step 3: Cross multiply
    985,727.58x = 1,478,645.18 × 311,758.57
  4. Step 4: Simplify right side
    985,727.58x = 460,980,308,312.80
  5. Step 5: Solve for x
    x = 460,980,308,312.80/985,727.58
  6. Step 6: Final answer
    x = 467,654.88

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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.