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Finding the Fourth Proportional to 540,313.44, 810,215.61 and 315,738.78

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Solution

The fourth proportional to 540,313.44, 810,215.61 and 315,738.78 is: 473,459.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,313.44 : 810,215.61 = 315,738.78 : x
  2. Step 2: Convert to fraction form
    540,313.44/810,215.61 = 315,738.78/x
  3. Step 3: Cross multiply
    540,313.44x = 810,215.61 × 315,738.78
  4. Step 4: Simplify right side
    540,313.44x = 255,816,488,238.36
  5. Step 5: Solve for x
    x = 255,816,488,238.36/540,313.44
  6. Step 6: Final answer
    x = 473,459.42

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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.