Home / 669,785.80-1,004,789.40-310,315.90

Finding the Fourth Proportional to 669,785.80, 1,004,789.40 and 310,315.90

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Solution

The fourth proportional to 669,785.80, 1,004,789.40 and 310,315.90 is: 465,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,785.80 : 1,004,789.40 = 310,315.90 : x
  2. Step 2: Convert to fraction form
    669,785.80/1,004,789.40 = 310,315.90/x
  3. Step 3: Cross multiply
    669,785.80x = 1,004,789.40 × 310,315.90
  4. Step 4: Simplify right side
    669,785.80x = 311,802,126,971.46
  5. Step 5: Solve for x
    x = 311,802,126,971.46/669,785.80
  6. Step 6: Final answer
    x = 465,525.14

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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.