Home / 564,939.24-779,619.78-310,288.20

Finding the Fourth Proportional to 564,939.24, 779,619.78 and 310,288.20

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Solution

The fourth proportional to 564,939.24, 779,619.78 and 310,288.20 is: 428,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,939.24 : 779,619.78 = 310,288.20 : x
  2. Step 2: Convert to fraction form
    564,939.24/779,619.78 = 310,288.20/x
  3. Step 3: Cross multiply
    564,939.24x = 779,619.78 × 310,288.20
  4. Step 4: Simplify right side
    564,939.24x = 241,906,818,220.60
  5. Step 5: Solve for x
    x = 241,906,818,220.60/564,939.24
  6. Step 6: Final answer
    x = 428,199.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.