Home / 669,786.80-1,004,790.90-310,316.90

Finding the Fourth Proportional to 669,786.80, 1,004,790.90 and 310,316.90

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Solution

The fourth proportional to 669,786.80, 1,004,790.90 and 310,316.90 is: 465,526.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,786.80 : 1,004,790.90 = 310,316.90 : x
  2. Step 2: Convert to fraction form
    669,786.80/1,004,790.90 = 310,316.90/x
  3. Step 3: Cross multiply
    669,786.80x = 1,004,790.90 × 310,316.90
  4. Step 4: Simplify right side
    669,786.80x = 311,803,597,236.21
  5. Step 5: Solve for x
    x = 311,803,597,236.21/669,786.80
  6. Step 6: Final answer
    x = 465,526.64

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Double scale
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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.